diff --git a/src/platformtheme/kdeplatformtheme.cpp b/src/platformtheme/kdeplatformtheme.cpp
--- a/src/platformtheme/kdeplatformtheme.cpp
+++ b/src/platformtheme/kdeplatformtheme.cpp
@@ -394,12 +394,18 @@
 //force QtQuickControls2 to use the desktop theme as default
 void KdePlatformTheme::setQtQuickControlsTheme()
 {
-    //if the user has explicitly set something else, don't meddle
-    if (qEnvironmentVariableIsSet("QT_QUICK_CONTROLS_STYLE")) {
-        return;
-    }
     //if the user is running only a QGuiApplication. Abort as this style is all about QWidgets and we know setting this will make it crash
     if (!qobject_cast<QApplication*>(qApp)) {
+        if (qgetenv("QT_QUICK_CONTROLS_STYLE") == "org.kde.desktop") {
+            qunsetenv("QT_QUICK_CONTROLS_STYLE");
+        }
+        if (qgetenv("QT_QUICK_CONTROLS_1_STYLE").right(7) == "Desktop") {
+            qunsetenv("QT_QUICK_CONTROLS_1_STYLE");
+        }
+        return;
+    }
+    //if the user has explicitly set something else, don't meddle
+    if (qEnvironmentVariableIsSet("QT_QUICK_CONTROLS_STYLE")) {
         return;
     }
     qputenv("QT_QUICK_CONTROLS_STYLE", "org.kde.desktop");