diff --git a/core/lib/Drupal/Core/Ajax/ReplaceCommand.php b/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
index 615f4eb..5d14f44 100644
--- a/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
+++ b/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
@@ -11,8 +11,8 @@
  * AJAX command for calling the jQuery replace() method.
  *
  * The 'insert/replaceWith' command instructs the client to use jQuery's
- * replaceWith() method to replace each element matched matched by the given
- * selector with the given HTML.
+ * replaceWith() method to replace each element matched by the given selector
+ * with the given HTML.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
  * defined in misc/ajax.js.