diff --git a/extensions/openai/completions.py b/extensions/openai/completions.py
index 362620fac8..6bd8f409a0 100644
--- a/extensions/openai/completions.py
+++ b/extensions/openai/completions.py
@@ -235,7 +235,7 @@ def chat_completions_common(body: dict, is_legacy: bool = False, stream=False, p
             raise InvalidRequestError(message="messages: missing content", param='messages')
 
     # Chat Completions
-    object_type = 'chat.completions' if not stream else 'chat.completions.chunk'
+    object_type = 'chat.completion' if not stream else 'chat.completion.chunk'
     created_time = int(time.time())
     cmpl_id = "chatcmpl-%d" % (int(time.time() * 1000000000))
     resp_list = 'data' if is_legacy else 'choices'