diff --git a/src/core/auth/auth.ts b/src/core/auth/auth.ts
index 03aa5f7b..6d995ae4 100644
--- a/src/core/auth/auth.ts
+++ b/src/core/auth/auth.ts
@@ -176,7 +176,7 @@ export const useAuthStore = defineStore('admin-auth', () => {
     try {
       const response = await http.post<ApiEnvelope<LoginResponse>, ApiEnvelope<LoginResponse>>(
         '/auth/login',
-        { username: account, password },
+        { loginId: account, password },
       )
       const result = unwrapApiResponse<LoginResponse>(response)
       await applySession(result, expectedGeneration)
diff --git a/src/shared/api/http.test.ts b/src/shared/api/http.test.ts
index 871ac892..15b361fb 100644
--- a/src/shared/api/http.test.ts
+++ b/src/shared/api/http.test.ts
@@ -32,7 +32,7 @@ describe('API error diagnostics', () => {
       }
     }
 
-    await http.post('/auth/login', { username: 'operator', password: 'secret' })
+    await http.post('/auth/login', { loginId: 'operator', password: 'secret' })
 
     expect(authorization).toBeUndefined()
     localStorage.removeItem('cc-admin-token')