diff --git a/src/qt_gui/main_window.cpp b/src/qt_gui/main_window.cpp
index 978422184..a87a075e1 100644
--- a/src/qt_gui/main_window.cpp
+++ b/src/qt_gui/main_window.cpp
@@ -8,6 +8,7 @@
 #include "cheats_patches.h"
 #include "check_update.h"
 #include "common/io_file.h"
+#include "common/path_util.h"
 #include "common/string_util.h"
 #include "common/version.h"
 #include "core/file_format/pkg.h"