diff --git a/src/testlib/qtestsystem.h b/src/testlib/qtestsystem.h
index 2f3f499d47..094570bb8c 100644
--- a/src/testlib/qtestsystem.h
+++ b/src/testlib/qtestsystem.h
@@ -45,7 +45,9 @@
 #include <QtTest/qtestcase.h>
 #include <QtCore/qcoreapplication.h>
 #include <QtCore/qelapsedtimer.h>
-#include <QtGui/QWindow>
+#ifdef QT_GUI_LIB
+#  include <QtGui/QWindow>
+#endif
 #ifdef QT_WIDGETS_LIB
 #  include <QtWidgets/QWidget>
 #endif
@@ -69,6 +71,7 @@ namespace QTest
         } while (timer.elapsed() < ms);
     }
 
+#ifdef QT_GUI_LIB
     inline static bool qWaitForWindowActive(QWindow *window, int timeout = 1000)
     {
         QElapsedTimer timer;
@@ -112,6 +115,7 @@ namespace QTest
         }
         return window->isExposed();
     }
+#endif
 
 #ifdef QT_WIDGETS_LIB
     inline static bool qWaitForWindowActive(QWidget *widget, int timeout = 1000)