diff --git a/libs/langchain-openai/src/azure/chat_models.ts b/libs/langchain-openai/src/azure/chat_models.ts
index c0850a65691b..3efaaec8ae0c 100644
--- a/libs/langchain-openai/src/azure/chat_models.ts
+++ b/libs/langchain-openai/src/azure/chat_models.ts
@@ -11,7 +11,6 @@ import {
   OpenAIChatInput,
   OpenAICoreRequestOptions,
 } from "../types.js";
-import { OpenAIClient } from "../index.js";
 
 export class AzureChatOpenAI extends ChatOpenAI {
   _llmType(): string {
@@ -56,7 +55,7 @@ export class AzureChatOpenAI extends ChatOpenAI {
    */
   invocationParams(
     options?: this["ParsedCallOptions"]
-  ): Omit<OpenAIClient.Chat.ChatCompletionCreateParams, "messages"> {
+  ) {
     const openaiInvocationParams = super.invocationParams(options);
     // remove the `stream_options` field as it is not supported by the Azure API
     delete openaiInvocationParams.stream_options;