diff --git a/test/test_device.py b/test/test_device.py
index d87fc6017..eb7fe501c 100644
--- a/test/test_device.py
+++ b/test/test_device.py
@@ -41,7 +41,8 @@ def start(self):
         assert self.path is not None
         assert self.fingerprint is not None
         assert self.master_xpub is not None
-        assert self.password is not None
+        # No need to check that self.password is not None, as it can be None if the device does not
+        # accept a password/passphrase from the host.
         assert self.supports_ms_display is not None
         assert self.supports_xpub_ms_display is not None
         assert self.supports_unsorted_ms is not None