1 files changed, 1 insertions, 3 deletions
diff --git a/synapse/events/validator.py b/synapse/events/validator.py
index 8aa8d7e017..d1fb026cd6 100644
--- a/synapse/events/validator.py
+++ b/synapse/events/validator.py
@@ -86,9 +86,7 @@ class EventValidator:
 
         # Depending on the room version, ensure the data is spec compliant JSON.
         if event.room_version.strict_canonicaljson:
-            # Note that only the client controlled portion of the event is
-            # checked, since we trust the portions of the event we created.
-            validate_canonicaljson(event.content)
+            validate_canonicaljson(event.get_pdu_json())
 
         if event.type == EventTypes.Aliases:
             if "aliases" in event.content: