diff --git a/skin-schema.json b/skin-schema.json
index b6568d0..0de4e24 100644
--- a/skin-schema.json
+++ b/skin-schema.json
@@ -695,8 +695,9 @@
           "type":"object",
           "properties":{
             "format":{
-              "description":"Determine the format of the quality options. Available formats: bitrate only, resolution only, and resolution + bitrate. Comma or white space separated values of: \'bitrate\' and \'resolution\'",
+              "description":"Determine the format of the quality options. Available formats: bitrate only, resolution only, and resolution + bitrate.",
               "type":"string",
+              "enum": ["bitrate", "resolution", "resolution bitrate"],
               "default":"bitrate"
             }
           }