diff --git a/yesod-core/Yesod/Handler.hs b/yesod-core/Yesod/Handler.hs
index 651ac200..9a952752 100644
--- a/yesod-core/Yesod/Handler.hs
+++ b/yesod-core/Yesod/Handler.hs
@@ -526,7 +526,7 @@ runHandler handler mrender sroute tomr master sub upload log' =
                     [ Header "Cache-Control" "no-cache, must-revalidate"
                     , Header "Expires" "Thu, 01 Jan 1970 05:05:05 GMT"
                     ]
-                hs = (if status == H.movedPermanently301 then disable_caching else [])
+                hs = (if status /= H.movedPermanently301 then disable_caching else [])
                       ++ Header "Location" (encodeUtf8 loc) : appEndo headers []
             return $ YARPlain
                 status hs typePlain emptyContent