1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py
index f2dfd49b07..0a285dba31 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -84,3 +84,6 @@ class ExperimentalConfig(Config):
 
         # MSC3772: A push rule for mutual relations.
         self.msc3772_enabled: bool = experimental.get("msc3772_enabled", False)
+
+        # MSC3715: dir param on /relations.
+        self.msc3715_enabled: bool = experimental.get("msc3715_enabled", False)