diff --git a/nodes/htz/ex42-1048908.py b/nodes/htz/ex42-1048908.py
index a48eba5..279bf04 100644
--- a/nodes/htz/ex42-1048908.py
+++ b/nodes/htz/ex42-1048908.py
@@ -254,7 +254,7 @@ nodes['htz.ex42-1048908'] = {
                         },
                         '/_matrix/media': {
                             'target': 'http://localhost:20090',
-                            'client_max_body_size': '500M',
+                            'max_body_size': '500M',
                             # matrix-media-repo needs this to be the
                             # homeserver address.
                             'x_forwarded_host': 'franzi.business',