diff --git a/libs/community/langchain_community/chat_models/openai.py b/libs/community/langchain_community/chat_models/openai.py
index 1bb86bf085..7026624c1b 100644
--- a/libs/community/langchain_community/chat_models/openai.py
+++ b/libs/community/langchain_community/chat_models/openai.py
@@ -367,11 +367,12 @@ class ChatOpenAI(BaseChatModel):
                 # Happens in streaming
                 continue
             token_usage = output["token_usage"]
-            for k, v in token_usage.items():
-                if k in overall_token_usage:
-                    overall_token_usage[k] += v
-                else:
-                    overall_token_usage[k] = v
+            if token_usage is not None:
+                for k, v in token_usage.items():
+                    if k in overall_token_usage:
+                        overall_token_usage[k] += v
+                    else:
+                        overall_token_usage[k] = v
             if system_fingerprint is None:
                 system_fingerprint = output.get("system_fingerprint")
         combined = {"token_usage": overall_token_usage, "model_name": self.model_name}