diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 315b795..4389858 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -38,14 +38,6 @@ Metrics/MethodLength:
 Metrics/PerceivedComplexity:
   Max: 13
 
-# Offense count: 1
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: EnforcedStyleForLeadingUnderscores.
-# SupportedStylesForLeadingUnderscores: disallowed, required, optional
-Naming/MemoizedInstanceVariableName:
-  Exclude:
-    - 'lib/generators/comment/comment_generator.rb'
-
 # Offense count: 2
 # Configuration parameters: NamePrefix, ForbiddenPrefixes, AllowedMethods, MethodDefinitionMacros.
 # NamePrefix: is_, has_, have_
diff --git a/lib/generators/comment/comment_generator.rb b/lib/generators/comment/comment_generator.rb
index 48f0add..3f1b157 100644
--- a/lib/generators/comment/comment_generator.rb
+++ b/lib/generators/comment/comment_generator.rb
@@ -4,7 +4,7 @@ class CommentGenerator < Rails::Generators::Base
   include Rails::Generators::Migration
 
   def self.source_root
-    @_acts_as_commentable_source_root ||= File.expand_path('templates', __dir__)
+    @source_root ||= File.expand_path('templates', __dir__)
   end
 
   def self.next_migration_number(_path)