diff --git a/domain-server/resources/describe-settings.json b/domain-server/resources/describe-settings.json
index f34d7ec8fb..65949e98a0 100644
--- a/domain-server/resources/describe-settings.json
+++ b/domain-server/resources/describe-settings.json
@@ -385,7 +385,7 @@
         {
           "name": "persistFilePath",
           "label": "Entities File Path",
-          "help": "The path to the file entities are stored in. If path is relative it will be relative to the application data directory.",
+          "help": "The path to the file entities are stored in. If this path is relative it will be relative to the application data directory. The entities file extension should be .json.gz.",
           "placeholder": "models.json.gz",
           "default": "models.json.gz",
           "advanced": true