diff --git a/src/wormhole/twisted/eventsource.py b/src/wormhole/twisted/eventsource_twisted.py
similarity index 100%
rename from src/wormhole/twisted/eventsource.py
rename to src/wormhole/twisted/eventsource_twisted.py
diff --git a/src/wormhole/twisted/transcribe.py b/src/wormhole/twisted/transcribe.py
index 1758029..a7eaaad 100644
--- a/src/wormhole/twisted/transcribe.py
+++ b/src/wormhole/twisted/transcribe.py
@@ -10,7 +10,7 @@ from nacl.secret import SecretBox
 from nacl.exceptions import CryptoError
 from nacl import utils
 from spake2 import SPAKE2_Symmetric
-from .eventsource import ReconnectingEventSource
+from .eventsource_twisted import ReconnectingEventSource
 from .. import __version__
 from .. import codes
 from ..errors import ServerError