diff --git a/main.c b/main.c
index bf4f97b..94f6841 100644
--- a/main.c
+++ b/main.c
@@ -114,7 +114,7 @@ main(int argc, char **argv)
 	argc -= optind;
 	argv += optind;
 
-	if (argc == 0)
+	if (argc != 1)
 		usage();