diff --git a/plugins/woocommerce/src/Internal/Features/FeaturesController.php b/plugins/woocommerce/src/Internal/Features/FeaturesController.php
index 44f84e1a77a..47694ded9a3 100644
--- a/plugins/woocommerce/src/Internal/Features/FeaturesController.php
+++ b/plugins/woocommerce/src/Internal/Features/FeaturesController.php
@@ -540,7 +540,7 @@ class FeaturesController {
 				return $features[ $feature_id ]['is_experimental'];
 			}
 		);
-		$mature_feature_ids       = array_diff( $feature_ids, $experimental_feature_ids, [ 'cart_checkout_blocks' ] );
+		$mature_feature_ids       = array_diff( $feature_ids, $experimental_feature_ids, array( 'cart_checkout_blocks' ) );
 		$feature_ids              = array_merge( $mature_feature_ids, array( 'mature_features_end' ), $experimental_feature_ids );
 
 		foreach ( $feature_ids as $id ) {