diff --git a/src/WindowMaximize.cpp b/src/WindowMaximize.cpp
index 7dc0aad..be17b8b 100644
--- a/src/WindowMaximize.cpp
+++ b/src/WindowMaximize.cpp
@@ -1,3 +1,4 @@
+#include <QDesktopWidget>
 #include "WindowMaximize.h"
 #include "WebPage.h"
 #include "WebPageManager.h"