diff --git a/litellm/router.py b/litellm/router.py
index d9563877c..3c486a747 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -3324,7 +3324,7 @@ class Router:
                     invalid_model_indices.append(idx)
                     continue
 
-            ## INVALID PARAMS ## -> catch 'gpt-3.5-turbo-16k' not supporting 'response_object' param
+            ## INVALID PARAMS ## -> catch 'gpt-3.5-turbo-16k' not supporting 'response_format' param
             if request_kwargs is not None and litellm.drop_params == False:
                 # get supported params
                 model, custom_llm_provider, _, _ = litellm.get_llm_provider(
@@ -3342,10 +3342,10 @@ class Router:
                     non_default_params = litellm.utils.get_non_default_params(
                         passed_params=request_kwargs
                     )
-                    special_params = ["response_object"]
+                    special_params = ["response_format"]
                     # check if all params are supported
                     for k, v in non_default_params.items():
-                        if k not in supported_openai_params:
+                        if k not in supported_openai_params and k in special_params:
                             # if not -> invalid model
                             verbose_router_logger.debug(
                                 f"INVALID MODEL INDEX @ REQUEST KWARG FILTERING, k={k}"