diff --git a/python/src/trezorlib/client.py b/python/src/trezorlib/client.py
index dd331fe62e..7af36e54d3 100644
--- a/python/src/trezorlib/client.py
+++ b/python/src/trezorlib/client.py
@@ -187,11 +187,9 @@ class TrezorClient:
 
     def _get_protocol(self) -> Channel:
         protocol = ProtocolV1Channel(self.transport, mapping.DEFAULT_MAPPING)
-
         protocol.write(messages.Initialize())
-
         response = protocol.read()
-        self.transport.close()
+
         if isinstance(response, messages.Failure):
             if response.code == messages.FailureType.InvalidProtocol:
                 LOG.debug("Protocol V2 detected")