diff --git a/components/sync/service/brave_sync_auth_manager.cc b/components/sync/service/brave_sync_auth_manager.cc
index 6b3dc11c8efd..d03d8ca746ad 100644
--- a/components/sync/service/brave_sync_auth_manager.cc
+++ b/components/sync/service/brave_sync_auth_manager.cc
@@ -12,6 +12,7 @@
 #include "brave/components/brave_sync/network_time_helper.h"
 #include "brave/components/constants/brave_services_key.h"
 #include "brave/components/constants/network_constants.h"
+#include "google_apis/gaia/gaia_id.h"
 
 namespace syncer {
 
@@ -78,7 +79,7 @@ SyncAccountInfo BraveSyncAuthManager::DetermineAccountToUse() const {
         base::HexEncode(public_key_.data(), public_key_.size());
     AccountInfo account_info;
     account_info.account_id = CoreAccountId::FromString(client_id);
-    account_info.gaia = client_id;
+    account_info.gaia = GaiaId(client_id);
     // about:sync-internals needs space separator in order to confine table
     // data within specific width. (ex. client_version and encrypted_types)
     account_info.email =