diff --git a/docs/migrating.rst b/docs/migrating.rst
index 9ea0e5f0a..0b2e0765d 100644
--- a/docs/migrating.rst
+++ b/docs/migrating.rst
@@ -985,7 +985,7 @@ For example, to implement a :class:`~.commands.HelpCommand` in a cog, the follow
 
     class MyHelpCommand(commands.MinimalHelpCommand):
         def get_command_signature(self, command):
-            return '{0.context.clean_prefix}{1.qualified_name} {1.signature}'.format(self, command)
+            return '{0.clean_prefix}{1.qualified_name} {1.signature}'.format(self, command)
 
     class MyCog(commands.Cog):
         def __init__(self, bot):