1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py
index 2a3df7c71d..e9886ef299 100644
--- a/synapse/util/__init__.py
+++ b/synapse/util/__init__.py
@@ -34,6 +34,9 @@ def unwrapFirstError(failure):
 class Clock(object):
     """
     A Clock wraps a Twisted reactor and provides utilities on top of it.
+
+    Args:
+        reactor: The Twisted reactor to use.
     """
     _reactor = attr.ib()