diff --git a/trezor_agent/gpg/encode.py b/trezor_agent/gpg/encode.py
index c25962d..43e10eb 100644
--- a/trezor_agent/gpg/encode.py
+++ b/trezor_agent/gpg/encode.py
@@ -52,7 +52,6 @@ class HardwareSigner(object):
 
     def close(self):
         """Close the connection to the device."""
-        self.client_wrapper.connection.clear_session()
         self.client_wrapper.connection.close()