1 files changed, 3 insertions, 3 deletions
diff --git a/vendor/symfony/http-foundation/Response.php b/vendor/symfony/http-foundation/Response.php
index 26b3f209d5..c3ac19d4a9 100644
--- a/vendor/symfony/http-foundation/Response.php
+++ b/vendor/symfony/http-foundation/Response.php
@@ -306,9 +306,9 @@ class Response
         }
 
         // Check if we need to send extra expire info headers
-        if ('1.0' == $this->getProtocolVersion() && false !== strpos($this->headers->get('Cache-Control'), 'no-cache')) {
-            $this->headers->set('pragma', 'no-cache');
-            $this->headers->set('expires', -1);
+        if ('1.0' == $this->getProtocolVersion() && false !== strpos($headers->get('Cache-Control'), 'no-cache')) {
+            $headers->set('pragma', 'no-cache');
+            $headers->set('expires', -1);
         }
 
         $this->ensureIEOverSSLCompatibility($request);