diff --git a/litellm/proxy/auth/oauth2_proxy_hook.py b/litellm/proxy/auth/oauth2_proxy_hook.py
index a1db5d842c4..a9003724636 100644
--- a/litellm/proxy/auth/oauth2_proxy_hook.py
+++ b/litellm/proxy/auth/oauth2_proxy_hook.py
@@ -15,8 +15,8 @@ async def handle_oauth2_proxy_request(request: Request) -> UserAPIKeyAuth:
     verbose_proxy_logger.debug("Handling oauth2 proxy request")
     # Define the OAuth2 config mappings
     oauth2_config_mappings: Dict[str, str] = general_settings.get(
-        "oauth2_config_mappings", None
-    )
+        "oauth2_config_mappings", {}
+    ) or {}
     verbose_proxy_logger.debug(f"Oauth2 config mappings: {oauth2_config_mappings}")
 
     if not oauth2_config_mappings: