diff --git a/includes/class-wc-cache-helper.php b/includes/class-wc-cache-helper.php
index 2a29326473c..37bbf559312 100644
--- a/includes/class-wc-cache-helper.php
+++ b/includes/class-wc-cache-helper.php
@@ -40,7 +40,7 @@ class WC_Cache_Helper {
 	 * @since 3.6.0
 	 */
 	public static function additional_nocache_headers( $headers ) {
-		// Opt-out of Google weblight if page is dynamic e.g. cart/checkout. https://support.google.com/webmasters/answer/6211428?hl=en.
+		// no-transform: Opt-out of Google weblight if page is dynamic e.g. cart/checkout. https://support.google.com/webmasters/answer/6211428?hl=en.
 		$headers['Cache-Control'] = 'no-transform, no-cache, no-store, must-revalidate';
 		return $headers;
 	}