diff --git a/desktop/tauri/src-tauri/templates/nsis/install_hooks.nsh b/desktop/tauri/src-tauri/templates/nsis/install_hooks.nsh
index fb8fccda..97958043 100644
--- a/desktop/tauri/src-tauri/templates/nsis/install_hooks.nsh
+++ b/desktop/tauri/src-tauri/templates/nsis/install_hooks.nsh
@@ -178,6 +178,9 @@ var dataDir
   RMDir /r /REBOOTOK "$COMMONPROGRAMDATA\Portmaster\exec"
   RMDir /r /REBOOTOK "$COMMONPROGRAMDATA\Portmaster\logs"
 
+  ; Remove PMv1 migration flag
+  Delete /REBOOTOK "$COMMONPROGRAMDATA\Safing\Portmaster\migrated.txt"
+
   ${If} $DeleteAppDataCheckboxState = 1
     DetailPrint "Deleting the application data..."
     RMDir /r /REBOOTOK "$COMMONPROGRAMDATA\Portmaster"
diff --git a/packaging/linux/postinst b/packaging/linux/postinst
index c99f8b4c..a54ee8e5 100644
--- a/packaging/linux/postinst
+++ b/packaging/linux/postinst
@@ -28,6 +28,9 @@ if [ -d "$OLD_INSTALLATION_DIR" ]; then
         echo "[ ] V1 migration: Removing V1 shortcuts"
         rm /etc/xdg/autostart/portmaster_notifier.desktop
         rm /usr/share/applications/portmaster_notifier.desktop
+        # app V1 shortcut
+        # NOTE: new V2 shortcut registered as "Portmaster.desktop" (first letter uppercase), so we can distinguish between V1 and V2 shortcuts.
+        rm /usr/share/applications/portmaster.desktop 
 
         # Remove V1 files (except configuration)
         # (keeping V1 configuration for a smooth downgrade, if needed)