diff --git a/libmproxy/console/flowview.py b/libmproxy/console/flowview.py
index ee85884e3..45b1a58b2 100644
--- a/libmproxy/console/flowview.py
+++ b/libmproxy/console/flowview.py
@@ -334,7 +334,7 @@ class FlowView(common.WWrap):
             conn = self.flow.request
         else:
             if not self.flow.response:
-                self.flow.response = flow.Response(self.flow.request, 200, "OK", flow.ODictCaseless(), "")
+                self.flow.response = flow.Response(self.flow.request, 200, "OK", flow.ODictCaseless(), "", None)
             conn = self.flow.response
 
         self.flow.backup()