diff --git a/docs/src/api/params.md b/docs/src/api/params.md
index ccd6bae8fe..3c9b4771cc 100644
--- a/docs/src/api/params.md
+++ b/docs/src/api/params.md
@@ -364,13 +364,13 @@ Query parameters to be sent with the URL.
 
 ## python-fetch-option-params
 * langs: python
-- `params` <[Object]<[string], [string]|[float]|[boolean]>>
+- `params` <[Object]<[string], [string]|[float]|[boolean]>|[string]>
 
 Query parameters to be sent with the URL.
 
 ## csharp-fetch-option-params
 * langs: csharp
-- `params` <[Object]<[string], [Serializable]>>
+- `params` <[Object]<[string], [Serializable]>|[string]>
 
 Query parameters to be sent with the URL.