diff --git a/README.md b/README.md
index e2c80af..ca5a78d 100644
--- a/README.md
+++ b/README.md
@@ -242,5 +242,6 @@ Thanks to the following sponsors for supporting the continued development of thi
 [@bobleer](https://github.com/bobleer)     
 @\*苗 (可通过主页邮箱联系我修改 github 用户名)  
 @\*划 (可通过主页邮箱联系我修改 github 用户名)     
-[@Clarence-pan](https://github.com/Clarence-pan)
-[@carter003](https://github.com/carter003)
+[@Clarence-pan](https://github.com/Clarence-pan)     
+[@carter003](https://github.com/carter003)      
+@S\*r (可通过主页邮箱联系我修改 github 用户名) 
\ No newline at end of file
diff --git a/src/utils/router.ts b/src/utils/router.ts
index cbe86a6..7f167a7 100644
--- a/src/utils/router.ts
+++ b/src/utils/router.ts
@@ -9,19 +9,19 @@ const getUseModel = (req: any, tokenCount: number, config: any) => {
     return req.body.model;
   }
   // if tokenCount is greater than 60K, use the long context model
-  if (tokenCount > 1000 * 60) {
+  if (tokenCount > 1000 * 60 && config.Router.longContext) {
     log("Using long context model due to token count:", tokenCount);
-    return config.Router!.longContext;
+    return config.Router.longContext;
   }
   // If the model is claude-3-5-haiku, use the background model
-  if (req.body.model?.startsWith("claude-3-5-haiku")) {
+  if (req.body.model?.startsWith("claude-3-5-haiku") && config.Router.background) {
     log("Using background model for ", req.body.model);
-    return config.Router!.background;
+    return config.Router.background;
   }
   // if exits thinking, use the think model
-  if (req.body.thinking) {
+  if (req.body.thinking && config.Router.think) {
     log("Using think model for ", req.body.thinking);
-    return config.Router!.think;
+    return config.Router.think;
   }
   return config.Router!.default;
 };