diff --git a/src/models/claude.js b/src/models/claude.js
index f8d2a90..9efd669 100644
--- a/src/models/claude.js
+++ b/src/models/claude.js
@@ -5,7 +5,7 @@ import { getKey } from '../utils/keys.js';
 export class Claude {
     constructor(model_name, url, params) {
         this.model_name = model_name;
-        this.params = params;
+        this.params = params || {};
 
         let config = {};
         if (url)