diff --git a/src/platformtheme/kdeplatformtheme.h b/src/platformtheme/kdeplatformtheme.h
--- a/src/platformtheme/kdeplatformtheme.h
+++ b/src/platformtheme/kdeplatformtheme.h
@@ -71,6 +71,7 @@
 
 private:
     void loadSettings();
+    void setQtQuickControlsTheme();
 
     static void setWindowProperty(QWindow *window, const QByteArray &name, const QByteArray &value);
 
diff --git a/src/platformtheme/kdeplatformtheme.cpp b/src/platformtheme/kdeplatformtheme.cpp
--- a/src/platformtheme/kdeplatformtheme.cpp
+++ b/src/platformtheme/kdeplatformtheme.cpp
@@ -96,6 +96,7 @@
 #endif
 
     QCoreApplication::setAttribute(Qt::AA_DontUseNativeMenuBar, false);
+    setQtQuickControlsTheme();
 }
 
 KdePlatformTheme::~KdePlatformTheme()
@@ -390,4 +391,18 @@
 }
 #endif
 
+//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)) {
+        return;
+    }
+    qputenv("QT_QUICK_CONTROLS_STYLE", "org.kde.desktop");
+}
+
 #include "kdeplatformtheme.moc"