diff --git a/litellm/proxy/pass_through_endpoints/pass_through_endpoints.py b/litellm/proxy/pass_through_endpoints/pass_through_endpoints.py
index 7b9e17842..8be241458 100644
--- a/litellm/proxy/pass_through_endpoints/pass_through_endpoints.py
+++ b/litellm/proxy/pass_through_endpoints/pass_through_endpoints.py
@@ -478,10 +478,9 @@ async def pass_through_request(  # noqa: PLR0915
             json=_parsed_body,
         )
 
-        if (
-            response.headers.get("content-type") is not None
-            and response.headers["content-type"] == "text/event-stream"
-        ):
+        verbose_proxy_logger.debug("response.headers= %s", response.headers)
+
+        if _is_streaming_response(response) is True:
             try:
                 response.raise_for_status()
             except httpx.HTTPStatusError as e:
@@ -621,6 +620,13 @@ def create_pass_through_route(
     return endpoint_func
 
 
+def _is_streaming_response(response: httpx.Response) -> bool:
+    _content_type = response.headers.get("content-type")
+    if _content_type is not None and "text/event-stream" in _content_type:
+        return True
+    return False
+
+
 async def initialize_pass_through_endpoints(pass_through_endpoints: list):
 
     verbose_proxy_logger.debug("initializing pass through endpoints")