diff --git a/frontend/encore/custom-loaders-plugins.rst b/frontend/encore/custom-loaders-plugins.rst
index 362ccfe20b4..45f0de12a70 100644
--- a/frontend/encore/custom-loaders-plugins.rst
+++ b/frontend/encore/custom-loaders-plugins.rst
@@ -56,7 +56,7 @@ to use the `IgnorePlugin`_ (see `moment/moment#2373`_):
     Encore
         // ...
 
-        + .addPlugin(new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/))
+    +     .addPlugin(new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/))
     ;
 
 .. _`handlebars-loader`: https://github.com/pcardune/handlebars-loader