1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/logging/_terse_json.py b/synapse/logging/_terse_json.py
index 03934956f4..c0b9384189 100644
--- a/synapse/logging/_terse_json.py
+++ b/synapse/logging/_terse_json.py
@@ -171,7 +171,7 @@ class LogProducer(object):
 
     def stopProducing(self):
         self._paused = True
-        self._buffer = None
+        self._buffer = deque()
 
     def resumeProducing(self):
         self._paused = False