diff --git a/database/migrations/2021_02_06_112145_migrate_old_data_base.php b/database/migrations/2021_02_06_112145_migrate_old_data_base.php
index cedc97d5..692ec7d8 100644
--- a/database/migrations/2021_02_06_112145_migrate_old_data_base.php
+++ b/database/migrations/2021_02_06_112145_migrate_old_data_base.php
@@ -289,7 +289,7 @@ class MigrateOldDataBase extends LeGaulois2016Migration
                                 $aimantuser_pseudo = sprintf(
                                     '%s_%s',
                                     $aimantuser_pseudo,
-                                    Str::random(4)
+                                    Str::random(2) . date('i:s')
                                 );
                             }
                             if (strlen($aimantuser_pseudo)) {