diff --git a/tests/test-mq-guards b/tests/test-mq-guards
--- a/tests/test-mq-guards
+++ b/tests/test-mq-guards
@@ -27,6 +27,9 @@ hg qrefresh
 hg qpop -a
 
 echo % should fail
+hg qguard does-not-exist.patch +bleh
+
+echo % should fail
 hg qguard +fail
 
 hg qpush