diff --git a/xs/src/slic3r/GUI/GUI.hpp b/xs/src/slic3r/GUI/GUI.hpp
index 04d19cb01..ef2f54473 100644
--- a/xs/src/slic3r/GUI/GUI.hpp
+++ b/xs/src/slic3r/GUI/GUI.hpp
@@ -3,7 +3,7 @@
 
 #include <string>
 #include <vector>
-#include "Config.hpp"
+#include "PrintConfig.hpp"
 
 #include <wx/intl.h>
 #include <wx/string.h>
@@ -34,8 +34,6 @@ class DynamicPrintConfig;
 class TabIface;
 class _3DScene;
 
-enum PrinterTechnology;
-
 #define _(s)    Slic3r::GUI::I18N::translate((s))
 
 namespace GUI { namespace I18N {