diff --git a/src/qwaylandlayersurface.cpp b/src/qwaylandlayersurface.cpp
index 0649ef5..081d5ad 100644
--- a/src/qwaylandlayersurface.cpp
+++ b/src/qwaylandlayersurface.cpp
@@ -66,7 +66,7 @@ QWaylandLayerSurface::QWaylandLayerSurface(QWaylandLayerShellIntegration *shell,
         setKeyboardInteractivity(m_interface->keyboardInteractivity());
     });
 
-    setDesiredSize(window->surfaceSize());
+    setDesiredSize(window->windowContentGeometry().size());
 }
 
 QWaylandLayerSurface::~QWaylandLayerSurface()