diff --git a/libs/langchain-community/src/chat_models/ibm.ts b/libs/langchain-community/src/chat_models/ibm.ts
index 3bb4f4a0adf4..7db2c9cec1c6 100644
--- a/libs/langchain-community/src/chat_models/ibm.ts
+++ b/libs/langchain-community/src/chat_models/ibm.ts
@@ -405,8 +405,8 @@ export class ChatWatsonx<
       ls_provider: "watsonx",
       ls_model_name: this.model,
       ls_model_type: "chat",
-      ls_temperature: params?.temperature ?? undefined,
-      ls_max_tokens: params?.maxTokens ?? undefined,
+      ls_temperature: params.temperature ?? undefined,
+      ls_max_tokens: params.maxTokens ?? undefined,
     };
   }