diff --git a/src/Posting/QR.coffee b/src/Posting/QR.coffee
index 8a935a967..279801b5b 100644
--- a/src/Posting/QR.coffee
+++ b/src/Posting/QR.coffee
@@ -866,6 +866,7 @@ QR =
             cb()
           else
             setTimeout check, attempts * $.SECOND
+        responseType: 'text'
         type: 'HEAD'
     check()