diff --git a/engine/extend/legacy_plugins.md b/engine/extend/legacy_plugins.md
index b3cd23445d..a6ace337d5 100644
--- a/engine/extend/legacy_plugins.md
+++ b/engine/extend/legacy_plugins.md
@@ -1,5 +1,6 @@
 ---
-redirect_from: /engine/extend/plugins/
+redirect_from:
+- /engine/extend/plugins/
 description: How to add additional functionality to Docker with plugins extensions
 keywords:
 - Examples, Usage, plugins, docker, documentation, user guide