diff --git a/src/frontends/qt4/Qt2BC.cpp b/src/frontends/qt4/Qt2BC.cpp
index 0506d7036e..a5d2506f26 100644
--- a/src/frontends/qt4/Qt2BC.cpp
+++ b/src/frontends/qt4/Qt2BC.cpp
@@ -15,6 +15,7 @@
 #include "BCView.h"
 #include "ButtonPolicy.h"
 #include "debug.h"
+#include "qt_helpers.h"
 
 #include <QPushButton>
 #include <QLineEdit>