diff --git a/t/helper/test-advise.c b/t/helper/test-advise.c
index 38cdc2884e..a7043df1d3 100644
--- a/t/helper/test-advise.c
+++ b/t/helper/test-advise.c
@@ -5,8 +5,8 @@
 
 int cmd__advise_if_enabled(int argc, const char **argv)
 {
-	if (!argv[1])
-	die("usage: %s <advice>", argv[0]);
+	if (argc != 2)
+		die("usage: %s <advice>", argv[0]);
 
 	setup_git_directory();
 	git_config(git_default_config, NULL);