diff --git a/Makefile b/Makefile
index fee26f8..95e748d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,12 @@
 
-.PHONY: pui ptap
+.PHONY: pui ptap clean
 
 all: pui ptap
 
+clean:
+	$(MAKE) -C pui clean
+	$(MAKE) -C ptap clean
+
 pui:
 	$(MAKE) -C pui