diff --git a/src/slic3r/GUI/PresetHints.cpp b/src/slic3r/GUI/PresetHints.cpp
index 51ef0e3d4..8efe832dd 100644
--- a/src/slic3r/GUI/PresetHints.cpp
+++ b/src/slic3r/GUI/PresetHints.cpp
@@ -9,6 +9,7 @@
 #include <wx/intl.h> 
 
 #include "GUI.hpp"
+#include "format.hpp"
 #include "I18N.hpp"
 
 namespace Slic3r {