diff --git a/Makefile b/Makefile
index aba120909f07b23c766473338038eccd6e079e02..566d81e093c0ff3d9055acdc852faf7e0c705937 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ install:
 	chmod 755 /usr/local/bin/ssh-ca
 
 clean:
-	echo Not implemented.
+	rm -rf CA CA.pub
 
 test: clean
 	echo Not implemented.