diff --git a/plugins/platforms/x11/windowed/x11windowed_output.cpp b/plugins/platforms/x11/windowed/x11windowed_output.cpp
index 8950e69a8c..46986a0dab 100644
--- a/plugins/platforms/x11/windowed/x11windowed_output.cpp
+++ b/plugins/platforms/x11/windowed/x11windowed_output.cpp
@@ -141,6 +141,7 @@ void X11WindowedOutput::initXInputForWindow()
 void X11WindowedOutput::setGeometry(const QPoint &logicalPosition, const QSize &pixelSize)
 {
     // TODO: set mode to have updated pixelSize
+    Q_UNUSED(pixelSize);
     setGlobalPos(logicalPosition);
 }