diff --git a/plugins/PostProcessingPlugin/PostProcessingPlugin.qml b/plugins/PostProcessingPlugin/PostProcessingPlugin.qml
index c252f13c68..46d05511cf 100644
--- a/plugins/PostProcessingPlugin/PostProcessingPlugin.qml
+++ b/plugins/PostProcessingPlugin/PostProcessingPlugin.qml
@@ -19,7 +19,7 @@ UM.Dialog
     height: 500 * screenScaleFactor
     minimumWidth: 400 * screenScaleFactor
     minimumHeight: 250 * screenScaleFactor
-
+    backgroundColor: UM.Theme.getColor("main_background")
     onVisibleChanged:
     {
         // Whenever the window is closed (either via the "Close" button or the X on the window frame), we want to update it in the stack.