diff --git a/ui/src/api/email-connector-hooks.ts b/ui/src/api/email-connector-hooks.ts
index 8417e05..1c6acf6 100644
--- a/ui/src/api/email-connector-hooks.ts
+++ b/ui/src/api/email-connector-hooks.ts
@@ -1,5 +1,5 @@
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
-import { api } from './client';
+import { api, ApiError } from './client';
 
 export interface EmailConnectorResponse {
   connectorId: string;
@@ -32,7 +32,7 @@ export function useEmailConnector() {
       try {
         return await api.get<EmailConnectorResponse>('/vendor/email-connector');
       } catch (e) {
-        if (e instanceof Error && e.message.includes('404')) return null;
+        if (e instanceof ApiError && e.status === 404) return null;
         throw e;
       }
     },