diff --git a/claude_sonnet-3-7-bedrock.py b/claude_sonnet-3-7-bedrock.py
index d37e0cc..7b6c231 100644
--- a/claude_sonnet-3-7-bedrock.py
+++ b/claude_sonnet-3-7-bedrock.py
@@ -168,7 +168,7 @@ class Pipeline:
             payload = {"modelId": model_id,
                        "messages": processed_messages,
                        "system": [{'text': system_message if system_message else 'you are an intelligent ai assistant'}],
-                       "inferenceConfig": {"temperature": 1, "max_tokens": body.get("max_tokens", MAX_COMBINED_TOKENS)},
+                       "inferenceConfig": {"temperature": 1, "maxTokens": body.get("max_tokens", MAX_COMBINED_TOKENS)},
                        "additionalModelRequestFields": reasoning_config
                        }
             if body.get("stream", False):