diff --git a/ui/drivers/win32/ui_win32_window.h b/ui/drivers/win32/ui_win32_window.h
index 632e4d2ed2..a3a6e9ecdd 100644
--- a/ui/drivers/win32/ui_win32_window.h
+++ b/ui/drivers/win32/ui_win32_window.h
@@ -44,6 +44,8 @@ void ui_window_win32_set_focused(void *data);
 
 void ui_window_win32_destroy(void *data);
 
+void ui_window_win32_set_title(void *data, char *buf);
+
 RETRO_END_DECLS
 
 #endif