diff --git a/src/Plugin/Access/RoleHierarchyAccess.php b/src/Plugin/Access/RoleHierarchyAccess.php
index 850827a..02fa8c1 100644
--- a/src/Plugin/Access/RoleHierarchyAccess.php
+++ b/src/Plugin/Access/RoleHierarchyAccess.php
@@ -26,6 +26,11 @@ class RoleHierarchyAccess {
   public function accessEditUser(AccountInterface $account, User $user) {
     $account_weight = RoleHierarchyHelper::getAccountRoleWeight($account);
     $user_weight = RoleHierarchyHelper::getUserRoleWeight($user);
+    // Check access to user admin one "1".
+    if ($account->id() != 1 && $user->id() == 1) {
+      $account_weight = 1;
+      $user_weight = 0;
+    }
     return AccessResult::allowedIf($account_weight <= $user_weight);
   }