diff --git a/qa/qa-sample.json b/qa/qa-sample.json
index 8bbe30799efe25677c5ae82c42f6f1a85c64c990..1761b79b3e30d9dd58645111c56234d0face9097 100644
--- a/qa/qa-sample.json
+++ b/qa/qa-sample.json
@@ -86,5 +86,7 @@
   "options": {
     "burnin-instances": 2,
     "burnin-disk-template": "drbd"
-  }
+  },
+
+  "# vim: set syntax=javascript :": null
 }