1 files changed, 0 insertions, 1 deletions

diff --git a/synapse/events/builder.py b/synapse/events/builder.py

index 746bd3978d..e2ee10dd3d 100644
--- a/synapse/events/builder.py
+++ b/synapse/events/builder.py
@@ -167,7 +167,6 @@ class EventBuilder:
             "content": self.content,
             "unsigned": self.unsigned,
             "depth": depth,
-            "prev_state": [],
         }
 
         if self.is_state():