diff --git a/trix/widgets.py b/trix/widgets.py
index 091b2b8..c5b133e 100644
--- a/trix/widgets.py
+++ b/trix/widgets.py
@@ -7,7 +7,7 @@
 
 class TrixEditor(forms.Textarea):
 
-    def render(self, name, value, attrs=None):
+    def render(self, name, value, attrs=None, renderer=None):
 
         if attrs is None:
             attrs = {}