diff --git a/client/src/app/core/auth/auth.service.ts b/client/src/app/core/auth/auth.service.ts
index eaa822e0f..4fc04a05c 100644
--- a/client/src/app/core/auth/auth.service.ts
+++ b/client/src/app/core/auth/auth.service.ts
@@ -153,7 +153,7 @@ export class AuthService {
       response_type: 'code',
       grant_type: 'password',
       scope: 'upload',
-      username,
+      username: username.toLowerCase(),
       password
     }