diff --git a/core/src/trezor/wire/thp/channel.py b/core/src/trezor/wire/thp/channel.py
index 70679b1753..42e6ba82ad 100644
--- a/core/src/trezor/wire/thp/channel.py
+++ b/core/src/trezor/wire/thp/channel.py
@@ -29,7 +29,7 @@ from .writer import (
 )
 
 if __debug__:
-    from ubinascii import hexlify
+    from trezor.utils import get_bytes_as_str
 
     from . import state_to_str
 
@@ -194,19 +194,19 @@ class Channel:
             assert nonce_receive is not None
 
             if __debug__ and utils.ALLOW_DEBUG_MESSAGES:
-                self._log("Buffer before decryption: ", hexlify(noise_buffer))
+                self._log("Buffer before decryption: ", get_bytes_as_str(noise_buffer))
 
             is_tag_valid = crypto.dec(
                 noise_buffer, tag, key_receive, nonce_receive, b""
             )
             if __debug__ and utils.ALLOW_DEBUG_MESSAGES:
-                self._log("Buffer after decryption: ", hexlify(noise_buffer))
+                self._log("Buffer after decryption: ", get_bytes_as_str(noise_buffer))
 
             self.channel_cache.set_int(CHANNEL_NONCE_RECEIVE, nonce_receive + 1)
 
         if __debug__ and utils.ALLOW_DEBUG_MESSAGES:
             self._log("Is decrypted tag valid? ", str(is_tag_valid))
-            self._log("Received tag: ", hexlify(tag).decode())
+            self._log("Received tag: ", get_bytes_as_str(tag))
             self._log("New nonce_receive: ", str((nonce_receive + 1)))
 
         if not is_tag_valid: