diff --git a/trezorlib/transport_hid.py b/trezorlib/transport_hid.py
index f42c8b8ef8..c1a9fc5561 100644
--- a/trezorlib/transport_hid.py
+++ b/trezorlib/transport_hid.py
@@ -160,4 +160,4 @@ def is_wirelink(dev):
 
 
 def is_debuglink(dev):
-    return (dev['usage_page'] == 0xFF01 or dev['interface_number'] == 1)
\ No newline at end of file
+    return (dev['usage_page'] == 0xFF01 or dev['interface_number'] == 1)