diff --git a/lib/Controller/Library.php b/lib/Controller/Library.php
index 2c3c217811..ff07ee7ff4 100644
--- a/lib/Controller/Library.php
+++ b/lib/Controller/Library.php
@@ -1168,6 +1168,14 @@ public function add(Request $request, Response $response)
             $folderId = $this->getUser()->homeFolderId;
         }
 
+        if ($parsedBody->getInt('playlistId') !== null) {
+            $playlist = $this->playlistFactory->getById($parsedBody->getInt('playlistId'));
+
+            if ($playlist->isDynamic === 1) {
+                throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+            }
+        }
+
         $options = array_merge([
             'oldMediaId' => null,
             'updateInLayouts' => 0,
diff --git a/lib/Controller/Widget.php b/lib/Controller/Widget.php
index bb1f0ded8e..abc8940a15 100644
--- a/lib/Controller/Widget.php
+++ b/lib/Controller/Widget.php
@@ -193,6 +193,10 @@ public function addWidget(Request $request, Response $response, $type, $id)
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         // Load some information about this playlist
         // loadWidgets = true to keep the ordering correct
         $playlist->load([
@@ -466,6 +470,10 @@ public function editWidget(Request $request, Response $response, $id)
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         $module = $this->moduleFactory->getByType($widget->type);
 
         // Handle common parameters.
@@ -679,6 +687,10 @@ public function deleteWidget(Request $request, Response $response, $id)
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         // Delete clears these, so cache them.
         $widgetMedia = $widget->mediaIds;
 
@@ -837,6 +849,10 @@ public function editWidgetTransition(Request $request, Response $response, $type
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         $widget->load();
         $sanitizedParams = $this->getSanitizer($request->getParams());
 
@@ -1002,6 +1018,10 @@ public function widgetAudio(Request $request, Response $response, $id)
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         // Are we allowed to do this?
         if ($widget->type === 'subplaylist') {
             throw new InvalidArgumentException(
@@ -1091,6 +1111,10 @@ public function widgetAudioDelete(Request $request, Response $response, $id)
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         $widget->load();
 
         foreach ($widget->audio as $audio) {
@@ -1529,6 +1553,10 @@ public function widgetExpiry(Request $request, Response $response, $id)
             throw new InvalidArgumentException(__('This Layout is not a Draft, please checkout.'), 'layoutId');
         }
 
+        if ($playlist->isDynamic === 1) {
+            throw new InvalidArgumentException(__('This Playlist is dynamically managed so cannot accept manual assignments.'), 'isDynamic');
+        }
+
         $widget->load();
 
         // Pull in the parameters we are expecting from the form.