diff --git a/qa/qa-sample.json b/qa/qa-sample.json
index 43a4326c91f0d2275c8b78d5cf0a463ce2f688d0..d8bccb2997c56e718c950a128d4da2a13c1fe9b6 100644
--- a/qa/qa-sample.json
+++ b/qa/qa-sample.json
@@ -18,7 +18,7 @@
 
   "# Instance policy specs": null,
   "ispec_mem_size_max": 1024,
-  "ispec_disk_size_min": 512.
+  "ispec_disk_size_min": 512,
 
   "# Lists of disk sizes": null,
   "disk": ["1G", "512M"],