diff --git a/src/plugins/sound_canberra.py b/src/plugins/sound_canberra.py
index 094901ed..dbb4baed 100644
--- a/src/plugins/sound_canberra.py
+++ b/src/plugins/sound_canberra.py
@@ -1,4 +1,8 @@
 # -*- coding: utf-8 -*-
+"""
+src/plugins/proxyconfig_stem.py
+===================================
+"""
 
 from pybitmessage.bitmessageqt import sound
 
@@ -14,7 +18,8 @@ _theme = {
 }
 
 
-def connect_plugin(category, label=None):
+def connect_plugin(category, label=None):    # pylint: disable=unused-argument
+    """This function implements the entry point."""
     try:
         _canberra.play(0, pycanberra.CA_PROP_EVENT_ID, _theme[category], None)
     except (KeyError, pycanberra.CanberraException):