diff --git a/.github/workflows/build_installer.yml b/.github/workflows/build_installer.yml
index 7c2207b7d..2797cb013 100644
--- a/.github/workflows/build_installer.yml
+++ b/.github/workflows/build_installer.yml
@@ -4,6 +4,10 @@ on:
   workflow_dispatch: {}
   push:
 
+env:
+  NATRON_BUILD_WORKSPACE: 'D:/nbw'
+  CI: 'True'
+
 jobs:
   win-installer:
     name: Windows Installer
@@ -11,8 +15,6 @@ jobs:
     defaults:
       run:
         shell: msys2 {0}
-    env:
-      CI: 'True'
 
     steps:
       - name: Checkout branch
@@ -41,7 +43,6 @@ jobs:
       - name: Build
         id: build
         run: |
-          NATRON_BUILD_WORKSPACE=${GITHUB_WORKSPACE}/natron_build
           NATRON_BUILD_WORKSPACE_UNIX=$(cygpath -u ${NATRON_BUILD_WORKSPACE})
           mkdir ${NATRON_BUILD_WORKSPACE_UNIX}
 
@@ -76,8 +77,6 @@ jobs:
     defaults:
       run:
         shell: msys2 {0}
-    env:
-      CI: 'True'
 
     steps:
       - name: Checkout branch
@@ -106,7 +105,6 @@ jobs:
       - name: Build
         id: build
         run: |
-          NATRON_BUILD_WORKSPACE=${GITHUB_WORKSPACE}/natron_build
           NATRON_BUILD_WORKSPACE_UNIX=$(cygpath -u ${NATRON_BUILD_WORKSPACE})
           mkdir ${NATRON_BUILD_WORKSPACE_UNIX}
 
diff --git a/Global/GlobalDefines.h b/Global/GlobalDefines.h
index 3a41fc94c..3fe45350d 100644
--- a/Global/GlobalDefines.h
+++ b/Global/GlobalDefines.h
@@ -26,6 +26,7 @@
 #include <Python.h>
 // ***** END PYTHON BLOCK *****
 
+#include <cstdint>
 #include <utility>
 #if defined(_WIN32)
 #include <string>
@@ -47,9 +48,6 @@
 #undef isalpha
 #undef isalnum
 
-#if !defined(Q_MOC_RUN) && !defined(SBK_RUN)
-#include <cstdint>
-#endif
 #include <QtCore/QtGlobal>
 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 #include <QtCore/QForeachContainer>
diff --git a/tools/jenkins/build-Windows-installer.sh b/tools/jenkins/build-Windows-installer.sh
index d021db062..b70c9a071 100755
--- a/tools/jenkins/build-Windows-installer.sh
+++ b/tools/jenkins/build-Windows-installer.sh
@@ -131,14 +131,27 @@ $GSED -e "s/_VERSION_/${NATRON_VERSION_FULL}/;s#_RBVERSION_#${NATRON_GIT_BRANCH}
 cp "$INC_PATH/config/"*.png "$INSTALLER_PATH/config/"
 
 # make sure we have mt and qtifw
-if [ ! -f "$SDK_HOME/bin/mt.exe" ] || [ ! -f "$SDK_HOME/bin/binarycreator.exe" ]; then
-    if [ ! -d "$SRC_PATH/natron-windows-installer" ]; then
-        ( cd "$SRC_PATH";
-          $CURL "$THIRD_PARTY_BIN_URL/natron-windows-installer.zip" --output "$SRC_PATH/natron-windows-installer.zip"
-          unzip natron-windows-installer.zip
-        )
+
+if ! which mt.exe; then
+    # Add Windows SDK to path so that mt.exe is available.
+    WIN_SDK_MAJOR_VERSION=10
+    WIN_SDK_BASE_PATH="/c/Program Files (x86)/Windows Kits/${WIN_SDK_MAJOR_VERSION}/bin"
+    WIN_SDK_VERSION=$(ls "${WIN_SDK_BASE_PATH}" | grep "${WIN_SDK_MAJOR_VERSION}." | sort -n | tail -1)
+    PATH="${WIN_SDK_BASE_PATH}/${WIN_SDK_VERSION}/x64/":${PATH}
+
+    if ! which mt.exe; then
+        echo "Failed to find mt.exe"
+        exit 1
+    fi
+fi
+
+if ! which binarycreator.exe && [ ! -f "/Setup.exe" ]; then
+    pacman -S mingw-w64-x86_64-qt-installer-framework
+
+    if ! which binarycreator.exe; then
+        echo "Failed to find binarycreator.exe"
+        exit 1
     fi
-    cp "$SRC_PATH/natron-windows-installer/mingw$BITS/bin/"{archivegen.exe,binarycreator.exe,installerbase.exe,installerbase.manifest,repogen.exe,mt.exe} "$SDK_HOME/bin/"
 fi
 
 function installPlugin() {