1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py
index 8e0f5356b4..1ac87bc304 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -389,3 +389,6 @@ class ExperimentalConfig(Config):
         self.msc4010_push_rules_account_data = experimental.get(
             "msc4010_push_rules_account_data", False
         )
+
+        # MSC3944: Dropping stale send-to-device messages
+        self.msc3944_enabled: bool = experimental.get("msc3944_enabled", False)