diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index ee59c2e..0fec05e 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -19,12 +19,6 @@ Metrics/LineLength:
 Metrics/MethodLength:
   Max: 11
 
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, ProceduralMethods, FunctionalMethods, IgnoredMethods.
-Style/BlockDelimiters:
-  Enabled: false
-
 # Offense count: 1
 Style/ClassAndModuleCamelCase:
   Enabled: false
diff --git a/lib/iso-639.rb b/lib/iso-639.rb
index c16bdc9..bfe33bf 100644
--- a/lib/iso-639.rb
+++ b/lib/iso-639.rb
@@ -500,7 +500,7 @@ class ISO_639 < Array
 
   # An inverted index generated from the ISO_639_2 data. Used for searching
   # all words and codes in all fields.
-  INVERTED_INDEX = lambda {
+  INVERTED_INDEX = lambda do
     index = {}
     ISO_639_2.each_with_index do |record, i|
       record.each do |field|
@@ -518,7 +518,7 @@ class ISO_639 < Array
       end
     end
     return index
-  }.call
+  end.call
 
   # The ISO 639-1 dataset as an array of entries. Each entry is an array with
   # the following format: