diff --git a/Makefile b/Makefile
index 745ec47..6997b5e 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ all:
 	cd checksum ; make all
 
 clean:
-	cd checksum ; make cleaner
+	cd checksum ; make clean
 
 test:
 	cd checksum ; make test