diff --git a/Makefile b/Makefile
index e0163d1..fb683d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,5 @@
 all:
 	@objfw-compile -o scrypt-pwgen *.m
+
+clean:
+	rm -f *.o *~ scrypt-pwgen