diff --git a/core/modules/user/src/Plugin/migrate/process/ConvertTokens.php b/core/modules/user/src/Plugin/migrate/process/ConvertTokens.php
index c6ea82c..44da52f 100644
--- a/core/modules/user/src/Plugin/migrate/process/ConvertTokens.php
+++ b/core/modules/user/src/Plugin/migrate/process/ConvertTokens.php
@@ -28,16 +28,16 @@ class ConvertTokens extends ProcessPluginBase {
    */
   public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
     $tokens = array(
-      '@site' => '[site:name]',
-      '@username' => '[user:name]',
-      '@mailto' => '[user:mail]',
-      '@login_uri' => '[site:login-url]',
-      '@uri_brief' => '[site:url-brief]',
-      '@edit_uri' => '[user:edit-url]',
-      '@login_url' => '[user:one-time-login-url]',
-      '@uri' => '[site:url]',
-      '@date' => '[date:medium]',
-      '@password' => '',
+      '!site' => '[site:name]',
+      '!username' => '[user:name]',
+      '!mailto' => '[user:mail]',
+      '!login_uri' => '[site:login-url]',
+      '!uri_brief' => '[site:url-brief]',
+      '!edit_uri' => '[user:edit-url]',
+      '!login_url' => '[user:one-time-login-url]',
+      '!uri' => '[site:url]',
+      '!date' => '[date:medium]',
+      '!password' => '',
     );
 
     if (is_string($value)) {