diff --git a/src/slic3r/GUI/OG_CustomCtrl.cpp b/src/slic3r/GUI/OG_CustomCtrl.cpp
index 23f61b5edc..f51737014f 100644
--- a/src/slic3r/GUI/OG_CustomCtrl.cpp
+++ b/src/slic3r/GUI/OG_CustomCtrl.cpp
@@ -8,6 +8,7 @@
 #include <wx/gdicmn.h>
 #include <wx/panel.h>
 #include <wx/stattext.h>
+#include "slic3r/GUI/wxExtensions.hpp"
 #include <cmath>
 #include <wx/event.h>
 #include <vector>