diff --git a/t/helper/test-read-midx.c b/t/helper/test-read-midx.c
index 9d6fa7a377..27072ba94d 100644
--- a/t/helper/test-read-midx.c
+++ b/t/helper/test-read-midx.c
@@ -55,9 +55,10 @@ static int read_midx_file(const char *object_dir, int show_objects)
 			printf("%s %"PRIu64"\t%s\n",
 			       oid_to_hex(&oid), e.offset, e.p->pack_name);
 		}
-		return 0;
 	}
 
+	close_midx(m);
+
 	return 0;
 }