diff --git a/src/proto.h b/src/proto.h
index ed2da6e..b3683af 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -165,6 +165,7 @@
 # endif
 # include "ui.pro"
 # include "undo.pro"
+# include "userfunc.pro"
 # include "version.pro"
 # include "window.pro"