diff --git a/client/src/lib/hooks/useConnection.ts b/client/src/lib/hooks/useConnection.ts
index cc91474..d5d7070 100644
--- a/client/src/lib/hooks/useConnection.ts
+++ b/client/src/lib/hooks/useConnection.ts
@@ -296,7 +296,7 @@ export function useConnection({
       const token = bearerToken || (await authProvider.tokens())?.access_token;
       if (token) {
         const authHeaderName = headerName || "Authorization";
-        headers[authHeaderName] = `${token}`;
+        headers[authHeaderName] = `Bearer ${token}`;
       }
 
       const clientTransport = new SSEClientTransport(mcpProxyServerUrl, {