1 files changed, 1 insertions, 0 deletions
diff --git a/src/gui/gui.h b/src/gui/gui.h
index 85ec33415..7ac546102 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -33,6 +33,7 @@ class Graphics;
 class GuiConfigListener;
 class ImageSet;
 class MouseEvent;
+class MouseInput;
 class SDLFont;
 class SDLInput;
 class Window;