1 files changed, 8 insertions, 1 deletions
diff --git a/testutil/list-errors.c b/testutil/list-errors.c
index 5738b06..365e091 100644
--- a/testutil/list-errors.c
+++ b/testutil/list-errors.c
@@ -6,8 +6,15 @@
 
 
 int
-main(void)
+main(int argc, char **argv)
 {
+	(void) argv;
+
+	if (argc != 1) {
+		fprintf(stderr, "usage error\n");
+		return 3;
+	}
+
 #define X(N, S)\
 	printf("%li %s %s\n", (long int)N, #N, S)
 	LIBSYSCALLS_LIST_ERRORS(X, ;);