diff --git a/src/wormhole_transit_relay/test/test_transit_server.py b/src/wormhole_transit_relay/test/test_transit_server.py
index 8fbdef8..bca740e 100644
--- a/src/wormhole_transit_relay/test/test_transit_server.py
+++ b/src/wormhole_transit_relay/test/test_transit_server.py
@@ -77,6 +77,7 @@ class _Transit:
 
         p1.disconnect()
         p2.disconnect()
+        self.flush()
 
     def test_sided_unsided(self):
         p1 = self.new_protocol()
@@ -105,6 +106,7 @@ class _Transit:
 
         p1.disconnect()
         p2.disconnect()
+        self.flush()
 
     def test_unsided_sided(self):
         p1 = self.new_protocol()