diff --git a/docs/modules/ROOT/pages/cops_rails.adoc b/docs/modules/ROOT/pages/cops_rails.adoc
index 26b0448e0a..b613fa3a68 100644
--- a/docs/modules/ROOT/pages/cops_rails.adoc
+++ b/docs/modules/ROOT/pages/cops_rails.adoc
@@ -83,10 +83,10 @@ are more clear and easier to read.
 [source,ruby]
 ----
 #bad
-Book.update_attributes!(author: 'Alice')
+book.update_attributes!(author: 'Alice')
 
 #good
-Book.update!(author: 'Alice')
+book.update!(author: 'Alice')
 ----
 
 == Rails/ActiveRecordCallbacksOrder
diff --git a/lib/rubocop/cop/rails/active_record_aliases.rb b/lib/rubocop/cop/rails/active_record_aliases.rb
index 11feb6bc24..fd6d7390f7 100644
--- a/lib/rubocop/cop/rails/active_record_aliases.rb
+++ b/lib/rubocop/cop/rails/active_record_aliases.rb
@@ -8,10 +8,10 @@ module Rails
       #
       # @example
       #   #bad
-      #   Book.update_attributes!(author: 'Alice')
+      #   book.update_attributes!(author: 'Alice')
       #
       #   #good
-      #   Book.update!(author: 'Alice')
+      #   book.update!(author: 'Alice')
       class ActiveRecordAliases < Base
         extend AutoCorrector