diff --git a/testing/ostest/pthread_exit.c b/testing/ostest/pthread_exit.c
index 19cc5fef8..a16d2a6ca 100644
--- a/testing/ostest/pthread_exit.c
+++ b/testing/ostest/pthread_exit.c
@@ -86,6 +86,8 @@ static int pthread_exit_main(int argc, char **argv)
 
   printf("pthread_exit_main %u: ERROR:  Still running\n", me);
   exit(0);
+
+  return 0;
 }
 
 /****************************************************************************