diff --git a/Makefile.example b/Makefile.example
index d335765..096bbf8 100644
--- a/Makefile.example
+++ b/Makefile.example
@@ -63,6 +63,7 @@ generate:
 html: generate
 
 clean:
+	[ ! -d $(OUTPUTDIRTUX) ] || rm -rf $(OUTPUTDIRTUX)
 	[ ! -d $(OUTPUTDIR) ] || rm -rf $(OUTPUTDIR)
 
 regenerate: