diff --git a/common/lib/xmodule/xmodule/discussion_module.py b/common/lib/xmodule/xmodule/discussion_module.py
index 1deceac5d0..57d7780d95 100644
--- a/common/lib/xmodule/xmodule/discussion_module.py
+++ b/common/lib/xmodule/xmodule/discussion_module.py
@@ -18,8 +18,10 @@ class DiscussionModule(XModule):
         }
         return self.system.render_template('discussion/_discussion_module.html', context)
 
-    def __init__(self, system, location, definition, descriptor, instance_state=None, shared_state=None, **kwargs):
-        XModule.__init__(self, system, location, definition, descriptor, instance_state, shared_state, **kwargs)
+    def __init__(self, system, location, definition, descriptor,
+                 instance_state=None, shared_state=None, **kwargs):
+        XModule.__init__(self, system, location, definition, descriptor,
+                         instance_state, shared_state, **kwargs)
 
         if isinstance(instance_state, str):
             instance_state = json.loads(instance_state)