2 files changed, 4 insertions, 2 deletions
diff --git a/synapse/config/appservice.py b/synapse/config/appservice.py
index 439bfe1526..ada165f238 100644
--- a/synapse/config/appservice.py
+++ b/synapse/config/appservice.py
@@ -170,6 +170,7 @@ def _load_appservice(
     # When enabled, appservice transactions contain the following information:
     #  - device One-Time Key counts
     #  - device unused fallback key usage states
+    #  - device list changes
     msc3202_transaction_extensions = as_info.get("org.matrix.msc3202", False)
     if not isinstance(msc3202_transaction_extensions, bool):
         raise ValueError(
diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py
index 064db4487c..d6bb1f752b 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -59,8 +59,9 @@ class ExperimentalConfig(Config):
             "msc3202_device_masquerading", False
         )
 
-        # Portion of MSC3202 related to transaction extensions:
-        # sending one-time key counts and fallback key usage to application services.
+        # The portion of MSC3202 related to transaction extensions:
+        # sending device list changes, one-time key counts and fallback key
+        # usage to application services.
         self.msc3202_transaction_extensions: bool = experimental.get(
             "msc3202_transaction_extensions", False
         )