diff --git a/_config.yml b/_config.yml
index c7cf999f..4f9f0284 100644
--- a/_config.yml
+++ b/_config.yml
@@ -34,7 +34,7 @@ staticman:
   format                 : "yml"
   moderation             : true
   path                   : "_data/comments/{options.slug}"
-  filename               : {@timestamp}-{@hash}
+  filename               : "{@timestamp}-{@hash}"
   requiredFields         : ['name', 'email', 'message']
   transforms:
     email                : "md5"