diff --git a/main_wayland.cpp b/main_wayland.cpp
index 42b7e3f158..7e155a5c1d 100644
--- a/main_wayland.cpp
+++ b/main_wayland.cpp
@@ -431,7 +431,6 @@ int main(int argc, char * argv[])
 
     qunsetenv("QT_DEVICE_PIXEL_RATIO");
     qunsetenv("QT_IM_MODULE");
-    qputenv("QT_WAYLAND_DISABLE_WINDOWDECORATION", "1");
     qputenv("QSG_RENDER_LOOP", "basic");
     KWin::ApplicationWayland a(argc, argv);
     a.setupTranslator();