diff --git a/apps/dashboard/openapi.json b/apps/dashboard/openapi.json
index 7cbb959cc7e58..138f06df83b05 100644
--- a/apps/dashboard/openapi.json
+++ b/apps/dashboard/openapi.json
@@ -360,7 +360,7 @@
                     {
                         "name": "limit",
                         "in": "query",
-                        "description": "Limit number of result items per widget",
+                        "description": "Limit number of result items per widget, not more than 30 are allowed",
                         "schema": {
                             "type": "integer",
                             "format": "int64",