diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@
 include(KDECMakeSettings)
 
 set(REQUIRED_QT_VERSION 5.5.0)
-find_package(Qt5 ${REQUIRED_QT_VERSION} CONFIG REQUIRED Widgets DBus X11Extras)
+find_package(Qt5 ${REQUIRED_QT_VERSION} CONFIG REQUIRED Widgets DBus X11Extras QuickControls2)
 
 set(KF5_DEP_VERSION "5.33.0")
 
diff --git a/src/platformtheme/CMakeLists.txt b/src/platformtheme/CMakeLists.txt
--- a/src/platformtheme/CMakeLists.txt
+++ b/src/platformtheme/CMakeLists.txt
@@ -47,6 +47,7 @@
     PRIVATE
         Qt5::DBus
         Qt5::X11Extras
+        Qt5::QuickControls2
         KF5::ConfigWidgets
         KF5::ConfigCore
         KF5::IconThemes
diff --git a/src/platformtheme/kdeplatformtheme.cpp b/src/platformtheme/kdeplatformtheme.cpp
--- a/src/platformtheme/kdeplatformtheme.cpp
+++ b/src/platformtheme/kdeplatformtheme.cpp
@@ -43,6 +43,7 @@
 #include <QDBusConnection>
 #include <QDBusConnectionInterface>
 #include <QDebug>
+#include <QtQuickControls2/QQuickStyle>
 
 #include <kiconengine.h>
 #include <kiconloader.h>
@@ -394,15 +395,19 @@
 //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")) {
+    //if the user is running only a QGuiApplication, explicitely unset the QQC1 desktop style and 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_1_STYLE").right(7) == "Desktop") {
+            qunsetenv("QT_QUICK_CONTROLS_1_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 the user has explicitly set something else, don't meddle
+    if (!QQuickStyle::name().isEmpty()) {
         return;
     }
-    qputenv("QT_QUICK_CONTROLS_STYLE", "org.kde.desktop");
+    QQuickStyle::setStyle(QLatin1String("org.kde.desktop"));
 }
 
 #include "kdeplatformtheme.moc"