diff --git a/src/webui/api/appcontroller.cpp b/src/webui/api/appcontroller.cpp
index c56ab79fad6..732fad4680b 100644
--- a/src/webui/api/appcontroller.cpp
+++ b/src/webui/api/appcontroller.cpp
@@ -123,6 +123,7 @@ void AppController::shutdownAction()
     {
         QCoreApplication::exit();
     });
+    setResult(u""_s);
 }
 
 void AppController::preferencesAction()
@@ -1157,6 +1158,8 @@ void AppController::setPreferencesAction()
 
     // Save preferences
     pref->apply();
+
+    setResult(u""_s);
 }
 
 void AppController::defaultSavePathAction()
@@ -1167,9 +1170,9 @@ void AppController::defaultSavePathAction()
 void AppController::sendTestEmailAction()
 {
     app()->sendTestEmail();
+    setResult(u""_s);
 }
 
-
 void AppController::getDirectoryContentAction()
 {
     requireParams({u"dirPath"_s});
@@ -1259,6 +1262,8 @@ void AppController::setCookiesAction()
     }
 
     Net::DownloadManager::instance()->setAllCookies(cookies);
+
+    setResult(u""_s);
 }
 
 void AppController::networkInterfaceListAction()
diff --git a/src/webui/api/authcontroller.cpp b/src/webui/api/authcontroller.cpp
index eb1d1baf237..2e7fc2f6914 100644
--- a/src/webui/api/authcontroller.cpp
+++ b/src/webui/api/authcontroller.cpp
@@ -46,11 +46,13 @@ AuthController::AuthController(ISessionManager *sessionManager, IApplication *ap
 void AuthController::setUsername(const QString &username)
 {
     m_username = username;
+    setResult(u""_s);
 }
 
 void AuthController::setPasswordHash(const QByteArray &passwordHash)
 {
     m_passwordHash = passwordHash;
+    setResult(u""_s);
 }
 
 void AuthController::loginAction()
@@ -99,6 +101,7 @@ void AuthController::loginAction()
 void AuthController::logoutAction() const
 {
     m_sessionManager->sessionEnd();
+    setResult(u""_s);
 }
 
 bool AuthController::isBanned() const
diff --git a/src/webui/api/rsscontroller.cpp b/src/webui/api/rsscontroller.cpp
index d103d3198ba..7a54f0aba6f 100644
--- a/src/webui/api/rsscontroller.cpp
+++ b/src/webui/api/rsscontroller.cpp
@@ -53,6 +53,8 @@ void RSSController::addFolderAction()
     const nonstd::expected<void, QString> result = RSS::Session::instance()->addFolder(path);
     if (!result)
         throw APIError(APIErrorType::Conflict, result.error());
+
+    setResult(u""_s);
 }
 
 void RSSController::addFeedAction()
@@ -64,6 +66,8 @@ void RSSController::addFeedAction()
     const nonstd::expected<void, QString> result = RSS::Session::instance()->addFeed(url, (path.isEmpty() ? url : path));
     if (!result)
         throw APIError(APIErrorType::Conflict, result.error());
+
+    setResult(u""_s);
 }
 
 void RSSController::setFeedURLAction()
@@ -75,6 +79,8 @@ void RSSController::setFeedURLAction()
     const nonstd::expected<void, QString> result = RSS::Session::instance()->setFeedURL(path, url);
     if (!result)
         throw APIError(APIErrorType::Conflict, result.error());
+
+    setResult(u""_s);
 }
 
 void RSSController::removeItemAction()
@@ -85,6 +91,8 @@ void RSSController::removeItemAction()
     const nonstd::expected<void, QString> result = RSS::Session::instance()->removeItem(path);
     if (!result)
         throw APIError(APIErrorType::Conflict, result.error());
+
+    setResult(u""_s);
 }
 
 void RSSController::moveItemAction()
@@ -96,6 +104,8 @@ void RSSController::moveItemAction()
     const nonstd::expected<void, QString> result = RSS::Session::instance()->moveItem(itemPath, destPath);
     if (!result)
         throw APIError(APIErrorType::Conflict, result.error());
+
+    setResult(u""_s);
 }
 
 void RSSController::itemsAction()
@@ -130,6 +140,8 @@ void RSSController::markAsReadAction()
     {
         item->markAsRead();
     }
+
+    setResult(u""_s);
 }
 
 void RSSController::refreshItemAction()
@@ -140,6 +152,8 @@ void RSSController::refreshItemAction()
     RSS::Item *item = RSS::Session::instance()->itemByPath(itemPath);
     if (item)
         item->refresh();
+
+    setResult(u""_s);
 }
 
 void RSSController::setRuleAction()
@@ -151,6 +165,8 @@ void RSSController::setRuleAction()
 
     const auto jsonObj = QJsonDocument::fromJson(ruleDef).object();
     RSS::AutoDownloader::instance()->setRule(RSS::AutoDownloadRule::fromJsonObject(jsonObj, ruleName));
+
+    setResult(u""_s);
 }
 
 void RSSController::renameRuleAction()
@@ -161,6 +177,8 @@ void RSSController::renameRuleAction()
     const QString newRuleName {params()[u"newRuleName"_s].trimmed()};
 
     RSS::AutoDownloader::instance()->renameRule(ruleName, newRuleName);
+
+    setResult(u""_s);
 }
 
 void RSSController::removeRuleAction()
@@ -169,6 +187,8 @@ void RSSController::removeRuleAction()
 
     const QString ruleName {params()[u"ruleName"_s].trimmed()};
     RSS::AutoDownloader::instance()->removeRule(ruleName);
+
+    setResult(u""_s);
 }
 
 void RSSController::rulesAction()
diff --git a/src/webui/api/searchcontroller.cpp b/src/webui/api/searchcontroller.cpp
index b954da11951..e15bead9fc6 100644
--- a/src/webui/api/searchcontroller.cpp
+++ b/src/webui/api/searchcontroller.cpp
@@ -142,6 +142,8 @@ void SearchController::stopAction()
         searchHandler->cancelSearch();
         m_activeSearches.remove(id);
     }
+
+    setResult(u""_s);
 }
 
 void SearchController::statusAction()
@@ -215,6 +217,8 @@ void SearchController::deleteAction()
     searchHandler->cancelSearch();
     m_activeSearches.remove(id);
     m_searchHandlers.erase(iter);
+
+    setResult(u""_s);
 }
 
 void SearchController::downloadTorrentAction()
@@ -238,6 +242,8 @@ void SearchController::downloadTorrentAction()
             downloadHandler->deleteLater();
         });
     }
+
+    setResult(u""_s);
 }
 
 void SearchController::pluginsAction()
@@ -253,6 +259,8 @@ void SearchController::installPluginAction()
     const QStringList sources = params()[u"sources"_s].split(u'|');
     for (const QString &source : sources)
         SearchPluginManager::instance()->installPlugin(source);
+
+    setResult(u""_s);
 }
 
 void SearchController::uninstallPluginAction()
@@ -262,6 +270,8 @@ void SearchController::uninstallPluginAction()
     const QStringList names = params()[u"names"_s].split(u'|');
     for (const QString &name : names)
         SearchPluginManager::instance()->uninstallPlugin(name.trimmed());
+
+    setResult(u""_s);
 }
 
 void SearchController::enablePluginAction()
@@ -273,6 +283,8 @@ void SearchController::enablePluginAction()
 
     for (const QString &name : names)
         SearchPluginManager::instance()->enablePlugin(name.trimmed(), enable);
+
+    setResult(u""_s);
 }
 
 void SearchController::updatePluginsAction()
@@ -282,6 +294,8 @@ void SearchController::updatePluginsAction()
     connect(pluginManager, &SearchPluginManager::checkForUpdatesFinished, this, &SearchController::checkForUpdatesFinished);
     connect(pluginManager, &SearchPluginManager::checkForUpdatesFailed, this, &SearchController::checkForUpdatesFailed);
     pluginManager->checkForUpdates();
+
+    setResult(u""_s);
 }
 
 void SearchController::checkForUpdatesFinished(const QHash<QString, PluginVersion> &updateInfo)
@@ -300,6 +314,8 @@ void SearchController::checkForUpdatesFinished(const QHash<QString, PluginVersio
         LogMsg(tr("Updating plugin %1").arg(pluginName), Log::INFO);
         pluginManager->updatePlugin(pluginName);
     }
+
+    setResult(u""_s);
 }
 
 void SearchController::checkForUpdatesFailed(const QString &reason)
diff --git a/src/webui/api/torrentcreatorcontroller.cpp b/src/webui/api/torrentcreatorcontroller.cpp
index ced5ec390c4..5874607baff 100644
--- a/src/webui/api/torrentcreatorcontroller.cpp
+++ b/src/webui/api/torrentcreatorcontroller.cpp
@@ -244,4 +244,6 @@ void TorrentCreatorController::deleteTaskAction()
 
     if (!m_torrentCreationManager->deleteTask(id))
         throw APIError(APIErrorType::NotFound);
+
+    setResult(u""_s);
 }
diff --git a/src/webui/api/torrentscontroller.cpp b/src/webui/api/torrentscontroller.cpp
index a34971da014..73acf855fd8 100644
--- a/src/webui/api/torrentscontroller.cpp
+++ b/src/webui/api/torrentscontroller.cpp
@@ -600,6 +600,8 @@ void TorrentsController::addWebSeedsAction()
     }
 
     torrent->addUrlSeeds(urls);
+
+    setResult(u""_s);
 }
 
 void TorrentsController::editWebSeedAction()
@@ -632,6 +634,8 @@ void TorrentsController::editWebSeedAction()
         torrent->removeUrlSeeds({origUrl});
         torrent->addUrlSeeds({newUrl});
     }
+
+    setResult(u""_s);
 }
 
 void TorrentsController::removeWebSeedsAction()
@@ -655,6 +659,8 @@ void TorrentsController::removeWebSeedsAction()
     }
 
     torrent->removeUrlSeeds(urls);
+
+    setResult(u""_s);
 }
 
 // Returns the files in a torrent in JSON format.
@@ -894,6 +900,8 @@ void TorrentsController::addTrackersAction()
 
     const QList<BitTorrent::TrackerEntry> entries = BitTorrent::parseTrackerEntries(params()[u"urls"_s]);
     torrent->addTrackers(entries);
+
+    setResult(u""_s);
 }
 
 void TorrentsController::editTrackerAction()
@@ -947,6 +955,8 @@ void TorrentsController::editTrackerAction()
 
     if (!torrent->isStopped())
         torrent->forceReannounce();
+
+    setResult(u""_s);
 }
 
 void TorrentsController::removeTrackersAction()
@@ -981,6 +991,8 @@ void TorrentsController::removeTrackersAction()
 
     for (BitTorrent::Torrent *const torrent : asConst(torrents))
         torrent->removeTrackers(urls);
+
+    setResult(u""_s);
 }
 
 void TorrentsController::addPeersAction()
@@ -1027,6 +1039,8 @@ void TorrentsController::stopAction()
 
     const QStringList hashes = params()[u"hashes"_s].split(u'|');
     applyToTorrents(hashes, [](BitTorrent::Torrent *const torrent) { torrent->stop(); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::startAction()
@@ -1035,6 +1049,8 @@ void TorrentsController::startAction()
 
     const QStringList idStrings = params()[u"hashes"_s].split(u'|');
     applyToTorrents(idStrings, [](BitTorrent::Torrent *const torrent) { torrent->start(); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::filePrioAction()
@@ -1076,6 +1092,8 @@ void TorrentsController::filePrioAction()
 
     if (priorityChanged)
         torrent->prioritizeFiles(priorities);
+
+    setResult(u""_s);
 }
 
 void TorrentsController::uploadLimitAction()
@@ -1124,6 +1142,8 @@ void TorrentsController::setUploadLimitAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [limit](BitTorrent::Torrent *const torrent) { torrent->setUploadLimit(limit); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setDownloadLimitAction()
@@ -1136,6 +1156,8 @@ void TorrentsController::setDownloadLimitAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [limit](BitTorrent::Torrent *const torrent) { torrent->setDownloadLimit(limit); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setShareLimitsAction()
@@ -1153,6 +1175,8 @@ void TorrentsController::setShareLimitsAction()
         torrent->setSeedingTimeLimit(seedingTimeLimit);
         torrent->setInactiveSeedingTimeLimit(inactiveSeedingTimeLimit);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::toggleSequentialDownloadAction()
@@ -1161,6 +1185,8 @@ void TorrentsController::toggleSequentialDownloadAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [](BitTorrent::Torrent *const torrent) { torrent->toggleSequentialDownload(); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::toggleFirstLastPiecePrioAction()
@@ -1169,6 +1195,8 @@ void TorrentsController::toggleFirstLastPiecePrioAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [](BitTorrent::Torrent *const torrent) { torrent->toggleFirstLastPiecePriority(); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setSuperSeedingAction()
@@ -1178,6 +1206,8 @@ void TorrentsController::setSuperSeedingAction()
     const bool value {parseBool(params()[u"value"_s]).value_or(false)};
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [value](BitTorrent::Torrent *const torrent) { torrent->setSuperSeeding(value); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setForceStartAction()
@@ -1190,6 +1220,8 @@ void TorrentsController::setForceStartAction()
     {
         torrent->start(value ? BitTorrent::TorrentOperatingMode::Forced : BitTorrent::TorrentOperatingMode::AutoManaged);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::deleteAction()
@@ -1203,6 +1235,8 @@ void TorrentsController::deleteAction()
     {
         BitTorrent::Session::instance()->removeTorrent(torrent->id(), deleteOption);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::increasePrioAction()
@@ -1214,6 +1248,8 @@ void TorrentsController::increasePrioAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     BitTorrent::Session::instance()->increaseTorrentsQueuePos(toTorrentIDs(hashes));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::decreasePrioAction()
@@ -1225,6 +1261,8 @@ void TorrentsController::decreasePrioAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     BitTorrent::Session::instance()->decreaseTorrentsQueuePos(toTorrentIDs(hashes));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::topPrioAction()
@@ -1236,6 +1274,8 @@ void TorrentsController::topPrioAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     BitTorrent::Session::instance()->topTorrentsQueuePos(toTorrentIDs(hashes));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::bottomPrioAction()
@@ -1247,6 +1287,8 @@ void TorrentsController::bottomPrioAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     BitTorrent::Session::instance()->bottomTorrentsQueuePos(toTorrentIDs(hashes));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setLocationAction()
@@ -1270,6 +1312,8 @@ void TorrentsController::setLocationAction()
         torrent->setAutoTMMEnabled(false);
         torrent->setSavePath(newLocation);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setSavePathAction()
@@ -1295,6 +1339,8 @@ void TorrentsController::setSavePathAction()
         if (!torrent->isAutoTMMEnabled())
             torrent->setSavePath(newPath);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setDownloadPathAction()
@@ -1320,6 +1366,8 @@ void TorrentsController::setDownloadPathAction()
         if (!torrent->isAutoTMMEnabled())
             torrent->setDownloadPath(newPath);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::renameAction()
@@ -1338,6 +1386,8 @@ void TorrentsController::renameAction()
 
     name.replace(QRegularExpression(u"\r?\n|\r"_s), u" "_s);
     torrent->setName(name);
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setAutoManagementAction()
@@ -1351,6 +1401,8 @@ void TorrentsController::setAutoManagementAction()
     {
         torrent->setAutoTMMEnabled(isEnabled);
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::recheckAction()
@@ -1359,6 +1411,8 @@ void TorrentsController::recheckAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [](BitTorrent::Torrent *const torrent) { torrent->forceRecheck(); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::reannounceAction()
@@ -1367,6 +1421,8 @@ void TorrentsController::reannounceAction()
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
     applyToTorrents(hashes, [](BitTorrent::Torrent *const torrent) { torrent->forceReannounce(); });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::setCategoryAction()
@@ -1381,6 +1437,8 @@ void TorrentsController::setCategoryAction()
         if (!torrent->setCategory(category))
             throw APIError(APIErrorType::Conflict, tr("Incorrect category name"));
     });
+
+    setResult(u""_s);
 }
 
 void TorrentsController::createCategoryAction()
@@ -1406,6 +1464,8 @@ void TorrentsController::createCategoryAction()
 
     if (!BitTorrent::Session::instance()->addCategory(category, categoryOptions))
         throw APIError(APIErrorType::Conflict, tr("Unable to create category"));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::editCategoryAction()
@@ -1428,6 +1488,8 @@ void TorrentsController::editCategoryAction()
 
     if (!BitTorrent::Session::instance()->editCategory(category, categoryOptions))
         throw APIError(APIErrorType::Conflict, tr("Unable to edit category"));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::removeCategoriesAction()
@@ -1437,6 +1499,8 @@ void TorrentsController::removeCategoriesAction()
     const QStringList categories {params()[u"categories"_s].split(u'\n')};
     for (const QString &category : categories)
         BitTorrent::Session::instance()->removeCategory(category);
+
+    setResult(u""_s);
 }
 
 void TorrentsController::categoriesAction()
@@ -1472,6 +1536,8 @@ void TorrentsController::addTagsAction()
             torrent->addTag(Tag(tagStr));
         });
     }
+
+    setResult(u""_s);
 }
 
 void TorrentsController::removeTagsAction()
@@ -1496,6 +1562,8 @@ void TorrentsController::removeTagsAction()
             torrent->removeAllTags();
         });
     }
+
+    setResult(u""_s);
 }
 
 void TorrentsController::createTagsAction()
@@ -1506,6 +1574,8 @@ void TorrentsController::createTagsAction()
 
     for (const QString &tagStr : tags)
         BitTorrent::Session::instance()->addTag(Tag(tagStr));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::deleteTagsAction()
@@ -1515,6 +1585,8 @@ void TorrentsController::deleteTagsAction()
     const QStringList tags {params()[u"tags"_s].split(u',', Qt::SkipEmptyParts)};
     for (const QString &tagStr : tags)
         BitTorrent::Session::instance()->removeTag(Tag(tagStr));
+
+    setResult(u""_s);
 }
 
 void TorrentsController::tagsAction()
@@ -1545,6 +1617,8 @@ void TorrentsController::renameFileAction()
     {
         throw APIError(APIErrorType::Conflict, error.message());
     }
+
+    setResult(u""_s);
 }
 
 void TorrentsController::renameFolderAction()
@@ -1567,6 +1641,8 @@ void TorrentsController::renameFolderAction()
     {
         throw APIError(APIErrorType::Conflict, error.message());
     }
+
+    setResult(u""_s);
 }
 
 void TorrentsController::exportAction()
@@ -1623,4 +1699,6 @@ void TorrentsController::setSSLParametersAction()
         throw APIError(APIErrorType::BadData);
 
     torrent->setSSLParameters(sslParams);
+
+    setResult(u""_s);
 }
diff --git a/src/webui/api/transfercontroller.cpp b/src/webui/api/transfercontroller.cpp
index 66ecb27470a..843dba2d237 100644
--- a/src/webui/api/transfercontroller.cpp
+++ b/src/webui/api/transfercontroller.cpp
@@ -104,6 +104,8 @@ void TransferController::setUploadLimitAction()
     if (limit == 0) limit = -1;
 
     BitTorrent::Session::instance()->setUploadSpeedLimit(limit);
+
+    setResult(u""_s);
 }
 
 void TransferController::setDownloadLimitAction()
@@ -113,12 +115,16 @@ void TransferController::setDownloadLimitAction()
     if (limit == 0) limit = -1;
 
     BitTorrent::Session::instance()->setDownloadSpeedLimit(limit);
+
+    setResult(u""_s);
 }
 
 void TransferController::toggleSpeedLimitsModeAction()
 {
     BitTorrent::Session *const session = BitTorrent::Session::instance();
     session->setAltGlobalSpeedLimitEnabled(!session->isAltGlobalSpeedLimitEnabled());
+
+    setResult(u""_s);
 }
 
 void TransferController::speedLimitsModeAction()
@@ -136,6 +142,8 @@ void TransferController::setSpeedLimitsModeAction()
 
     // Any non-zero values are considered as alternative mode
     BitTorrent::Session::instance()->setAltGlobalSpeedLimitEnabled(mode != 0);
+
+    setResult(u""_s);
 }
 
 void TransferController::banPeersAction()
@@ -149,4 +157,6 @@ void TransferController::banPeersAction()
         if (!addr.ip.isNull())
             BitTorrent::Session::instance()->banIP(addr.ip.toString());
     }
+
+    setResult(u""_s);
 }