diff --git a/tests/x11shadowreader.cpp b/tests/x11shadowreader.cpp
index 7af037f3ea..11068a76f4 100644
--- a/tests/x11shadowreader.cpp
+++ b/tests/x11shadowreader.cpp
@@ -19,6 +19,7 @@
 */
 #include "../xcbutils.h"
 #include <QApplication>
+#include <QDebug>
 #include <QCommandLineParser>
 #include <QLabel>
 #include <QFormLayout>