diff --git a/litellm/utils.py b/litellm/utils.py
index cefd348078b..a280a1668a6 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -4818,7 +4818,7 @@ def add_provider_specific_params_to_optional_params(
             )
             is False
         ):
-            extra_body = passed_params.pop("extra_body", None) or {}
+            extra_body = dict(passed_params.pop("extra_body", None) or {})
             for k in passed_params.keys():
                 if k not in openai_params and passed_params[k] is not None:
                     extra_body[k] = passed_params[k]