diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index 9babc6345a..7a05a03cdc 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -1000,7 +1000,7 @@ class Response
      */
     public function isNotModified(Request $request)
     {
-        if (!$request->isMethodSafe()) {
+        if (!$request->isMethodCacheable()) {
             return false;
         }