diff --git a/docs/api/methods/deprecated-methods.rst b/docs/api/methods/deprecated-methods.rst
--- a/docs/api/methods/deprecated-methods.rst
+++ b/docs/api/methods/deprecated-methods.rst
@@ -38,7 +38,7 @@ changeset_comment
 
    Example error output:
 
-   .. code-block:: json
+   .. code-block:: javascript
 
        {
            "id" : <id_given_in_input>,
diff --git a/rhodecode/api/views/deprecated_api.py b/rhodecode/api/views/deprecated_api.py
--- a/rhodecode/api/views/deprecated_api.py
+++ b/rhodecode/api/views/deprecated_api.py
@@ -66,7 +66,7 @@ def changeset_comment(request, apiuser, 
 
     Example error output:
 
-    .. code-block:: json
+    .. code-block:: javascript
 
         {
             "id" : <id_given_in_input>,