diff --git a/resources/function_help/json/map_prefix_keys b/resources/function_help/json/map_prefix_keys
index 0d699da59bf..c55495bd594 100644
--- a/resources/function_help/json/map_prefix_keys
+++ b/resources/function_help/json/map_prefix_keys
@@ -2,7 +2,7 @@
   "name": "map_prefix_keys",
   "type": "function",
   "groups": ["Maps"],
-  "description": "Returns a map with all keys prefixed by prefix.",
-  "arguments": [ {"arg":"map","description":"a map"}, {"arg":"prefix","description":"the prefix"}],
+  "description": "Returns a map with all keys prefixed by a given string.",
+  "arguments": [ {"arg":"map","description":"a map"}, {"arg":"prefix","description":"a string"}],
   "examples": [ { "expression":"map_prefix_keys(map('1','one','2','two'), 'prefix-')", "returns":"{ 'prefix-1': 'one', 'prefix-2': 'two' }"}]
 }