diff --git a/src/slic3r/GUI/LoginDialog.cpp b/src/slic3r/GUI/LoginDialog.cpp
index 9b4d92b99d..f106ddd61f 100644
--- a/src/slic3r/GUI/LoginDialog.cpp
+++ b/src/slic3r/GUI/LoginDialog.cpp
@@ -1,6 +1,8 @@
 #include "LoginDialog.hpp"
 
 #include "GUI_App.hpp"
+#include "wxExtensions.hpp"
+#include "GUI.hpp"
 #include "I18N.hpp"
 #include "format.hpp"
 
diff --git a/src/slic3r/GUI/UserAccountCommunication.cpp b/src/slic3r/GUI/UserAccountCommunication.cpp
index 7de272b6e8..85a628eeb8 100644
--- a/src/slic3r/GUI/UserAccountCommunication.cpp
+++ b/src/slic3r/GUI/UserAccountCommunication.cpp
@@ -1,5 +1,6 @@
 #include "UserAccountCommunication.hpp"
 #include "GUI_App.hpp"
+#include "GUI.hpp"
 #include "format.hpp"
 #include "../Utils/Http.hpp"
 #include "slic3r/GUI/I18N.hpp"