X-Git-Url: https://code.kerkeslager.com/?p=fwx;a=blobdiff_plain;f=src%2Ffwx%2F__init__.py;fp=src%2Ffwx%2F__init__.py;h=6ee7541cd8f08920853ce7e5b2d7dd234d6fc81e;hp=d26083b99ba0c873e4f034fcbd4b79c9d11a0cb8;hb=7b02629c8e924154857f35cef1364bef66fe3b75;hpb=cdcd770a863322ff01363438d0739bbcc63873e3

diff --git a/src/fwx/__init__.py b/src/fwx/__init__.py
index d26083b..6ee7541 100644
--- a/src/fwx/__init__.py
+++ b/src/fwx/__init__.py
@@ -158,7 +158,7 @@ class Response(_Response):
             'Content-Type': self.content_type,
         }
 
-        for key, value in builtin_headers:
+        for key, value in builtin_headers.items():
             if key in result:
                 raise Exception('Header "{}" defined twice'.format(key))
             else: