diff --git a/Gui/Control/CompareControl.cpp b/Gui/Control/CompareControl.cpp
index 838180b..2562c5c 100644
--- a/Gui/Control/CompareControl.cpp
+++ b/Gui/Control/CompareControl.cpp
@@ -1,6 +1,7 @@
 #include "CompareControl.h"
 
 #include <QDesktopServices>
+#include <QDialogButtonBox>
 #include <QDir>
 #include <QFile>
 #include <QListWidget>