diff --git a/src/tests/seek-stress.c b/src/tests/seek-stress.c
index bf8fada724aff3f941a2fc405c43d98b93fc0581..17ea276a0d1bb01a4d5783c38439882c986dbb91 100644
--- a/src/tests/seek-stress.c
+++ b/src/tests/seek-stress.c
@@ -117,6 +117,7 @@ main (int argc, char * argv[])
 
   if (filename == NULL) {
     printf ("usage: %s [--verbose] filename\n", argv[0]);
+    exit(1);
   }
 
   if ((oggz = oggz_open (filename, OGGZ_READ | OGGZ_AUTO)) == NULL) {