diff --git a/SYNTAX.md b/SYNTAX.md
index 5785e56..7a9b6a2 100644
--- a/SYNTAX.md
+++ b/SYNTAX.md
@@ -240,7 +240,7 @@ There are currently the following built-in modifiers:
 - `@values`: Returns an array of values for an object.
 - `@tostr`: Converts json to a string. Wraps a json string.
 - `@fromstr`: Converts a string from json. Unwraps a json string.
-- `@group`: Groups arrays of objects. See e4fc67c.
+- `@group`: Groups arrays of objects. See [e4fc67c](https://github.com/tidwall/gjson/commit/e4fc67c92aeebf2089fabc7872f010e340d105db).
 
 #### Modifier arguments