diff --git a/backend/dev_homeserver.yaml b/backend/dev_homeserver.yaml
index b1800b59..5697c32e 100644
--- a/backend/dev_homeserver.yaml
+++ b/backend/dev_homeserver.yaml
@@ -25,7 +25,7 @@ trusted_key_servers:
 experimental_features:
   # MSC3266: Room summary API. Used for knocking over federation
   msc3266_enabled: true
-  # MSC4222 needed for syncv2 state_after. This allow clients to 
+  # MSC4222 needed for syncv2 state_after. This allow clients to
   # correctly track the state of the room.
   msc4222_enabled: true