diff --git a/tools/webpack/blocks.js b/tools/webpack/blocks.js
index db1b6b89e5bf99..c4d5b6f609240f 100644
--- a/tools/webpack/blocks.js
+++ b/tools/webpack/blocks.js
@@ -152,7 +152,7 @@ module.exports = [
 							filter: ( filepath ) => {
 								return (
 									filepath.endsWith( sep + 'index.php' ) ||
-									PhpFilePathsPlugin.renderPaths.includes(
+									PhpFilePathsPlugin.paths.includes(
 										realpathSync( filepath ).replace(
 											/\\/g,
 											'/'