diff --git a/quark.c b/quark.c
index af70cd4..817f78d 100644
--- a/quark.c
+++ b/quark.c
@@ -912,8 +912,9 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND
 
-	if (argc)
+	if (argc) {
 		usage();
+	}
 
 	/* reap children automatically */
 	if (signal(SIGCHLD, SIG_IGN) == SIG_ERR) {