diff --git a/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIPlatformClient.cs b/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIPlatformClient.cs
index d64f45fa..3647f1c4 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIPlatformClient.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIPlatformClient.cs
@@ -56,7 +56,7 @@ namespace SKIT.FlurlHttpClient.Wechat.OpenAI
         {
             IFlurlRequest flurlRequest = FlurlClient.Request(urlSegments).WithVerb(method);
 
-            if (request.Timeout.HasValue)
+            if (request.Timeout != null)
             {
                 flurlRequest.WithTimeout(TimeSpan.FromMilliseconds(request.Timeout.Value));
             }
diff --git a/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIThirdPartyClient.cs b/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIThirdPartyClient.cs
index 211b539b..1d6f47e4 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIThirdPartyClient.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.OpenAI/WechatOpenAIThirdPartyClient.cs
@@ -55,13 +55,16 @@ namespace SKIT.FlurlHttpClient.Wechat.OpenAI
         {
             IFlurlRequest flurlRequest = FlurlClient.Request(urlSegments).WithVerb(method);
 
-            if (request.Timeout.HasValue)
+            if (request.Timeout != null)
             {
                 flurlRequest.WithTimeout(TimeSpan.FromMilliseconds(request.Timeout.Value));
             }
 
             if (request.RequestId == null)
+            {
                 request.RequestId = Guid.NewGuid().ToString("N");
+            }
+
             flurlRequest.WithHeader("request_id", request.RequestId);
 
             if (request.BotId != null)