diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index 4873cf9d1f..90f9eb6847 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -430,12 +430,6 @@ class Auth(object):
 
         builder.auth_events = auth_events_entries
 
-        context.auth_events = {
-            k: v
-            for k, v in context.current_state.items()
-            if v.type in AuthEventTypes
-        }
-
     def compute_auth_events(self, event, current_state):
         if event.type == EventTypes.Create:
             return []
diff --git a/synapse/events/snapshot.py b/synapse/events/snapshot.py
index 7e98bdef28..4ecadf0879 100644
--- a/synapse/events/snapshot.py
+++ b/synapse/events/snapshot.py
@@ -16,8 +16,7 @@
 
 class EventContext(object):
 
-    def __init__(self, current_state=None, auth_events=None):
+    def __init__(self, current_state=None):
         self.current_state = current_state
-        self.auth_events = auth_events
         self.state_group = None
         self.rejected = False
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 349a52b85c..261335b27c 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -90,8 +90,8 @@ class BaseHandler(object):
         event = builder.build()
 
         logger.debug(
-            "Created event %s with auth_events: %s, current state: %s",
-            event.event_id, context.auth_events, context.current_state,
+            "Created event %s with current state: %s",
+            event.event_id, context.current_state,
         )
 
         defer.returnValue(
@@ -106,7 +106,7 @@ class BaseHandler(object):
         # We now need to go and hit out to wherever we need to hit out to.
 
         if not suppress_auth:
-            self.auth.check(event, auth_events=context.auth_events)
+            self.auth.check(event, auth_events=context.current_state)
 
         yield self.store.persist_event(event, context=context)
 
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index ae4e9b316d..65cfacba2e 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -464,11 +464,9 @@ class FederationHandler(BaseHandler):
             builder=builder,
         )
 
-        self.auth.check(event, auth_events=context.auth_events)
+        self.auth.check(event, auth_events=context.current_state)
 
-        pdu = event
-
-        defer.returnValue(pdu)
+        defer.returnValue(event)
 
     @defer.inlineCallbacks
     @log_function
@@ -705,7 +703,7 @@ class FederationHandler(BaseHandler):
         )
 
         if not auth_events:
-            auth_events = context.auth_events
+            auth_events = context.current_state
 
         logger.debug(
             "_handle_new_event: %s, auth_events: %s",
diff --git a/synapse/state.py b/synapse/state.py
index 345046cd88..ba2500d61c 100644
--- a/synapse/state.py
+++ b/synapse/state.py
@@ -134,18 +134,6 @@ class StateHandler(object):
             }
             context.state_group = None
 
-            if hasattr(event, "auth_events") and event.auth_events:
-                auth_ids = self.hs.get_auth().compute_auth_events(
-                    event, context.current_state
-                )
-                context.auth_events = {
-                    k: v
-                    for k, v in context.current_state.items()
-                    if v.event_id in auth_ids
-                }
-            else:
-                context.auth_events = {}
-
             if event.is_state():
                 key = (event.type, event.state_key)
                 if key in context.current_state:
@@ -182,11 +170,6 @@ class StateHandler(object):
                 replaces = context.current_state[key]
                 event.unsigned["replaces_state"] = replaces.event_id
 
-        context.auth_events = {
-            k: e for k, e in context.current_state.items()
-            if k[0] in AuthEventTypes
-        }
-
         context.prev_state_events = prev_state
         defer.returnValue(context)