diff --git a/packages/browser-sync-client/index.js b/packages/browser-sync-client/index.js
index 045f5420c..2d5947146 100644
--- a/packages/browser-sync-client/index.js
+++ b/packages/browser-sync-client/index.js
@@ -92,7 +92,7 @@ function init(options, requestBody, type) {
          * Set the appropriate headers for caching
          */
         setHeaders(res, output);
-        if (isConditionalGet(req) && fresh(req.headers, res._headers)) {
+        if (isConditionalGet(req) && fresh(req.headers, res.getHeaders())) {
             return notModified(res);
         }