diff --git a/.rubocop.yml b/.rubocop.yml
index 63a41cf00..0837ced7a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -6,6 +6,7 @@ AllCops:
     - 'spec/**/*'
     - 'lib/fhir_models/fhir/**/*'
     - 'lib/fhir_models/fhirpath/evaluate.rb'
+    - 'lib/fhir_models/generated/**/*'
     - 'lib/**/*.rake'
     - 'tmp/**/*'
     - '*.gemspec'
diff --git a/Gemfile b/Gemfile
index 3f516d066..9bd327ec2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,4 +7,4 @@ group :development, :test do
   gem 'debug'
   gem 'pry'
   gem 'pry-byebug'
-end
\ No newline at end of file
+end
diff --git a/dir_diff.rb b/dir_diff.rb
index 8982b3927..5b293d1b8 100644
--- a/dir_diff.rb
+++ b/dir_diff.rb
@@ -4,13 +4,13 @@
 options = {}
 OptionParser.new do |opts|
   opts.banner = "Usage: ruby #{__FILE__} [options] dir1 dir2"
-  opts.on("-n", "--name", "Print files in only one directory") do |n|
+  opts.on('-n', '--name', 'Print files in only one directory') do |n|
     options[:name] = n
   end
-  opts.on("-d", "--diff", "Print filenames with inconsistencies") do |d|
+  opts.on('-d', '--diff', 'Print filenames with inconsistencies') do |d|
     options[:diff] = d
   end
-  opts.on("-v", "--verbose", "Print file inconsistencies")  do |v|
+  opts.on('-v', '--verbose', 'Print file inconsistencies') do |v|
     options[:verbose] = v
   end
 end.parse!
@@ -18,7 +18,7 @@
 def compare_directories(dir1, dir2, options)
   dir1_files = Dir.glob("#{dir1}/**/*").select { |f| File.file?(f) }.map { |f| f.gsub("#{dir1}/", '') }.sort
   dir2_files = Dir.glob("#{dir2}/**/*").select { |f| File.file?(f) }.map { |f| f.gsub("#{dir2}/", '') }.sort
-  
+
   # find different files
   only_in_dir1 = dir1_files - dir2_files
   only_in_dir2 = dir2_files - dir1_files
@@ -35,18 +35,18 @@ def compare_directories(dir1, dir2, options)
     common_files.each do |file|
       file1 = File.join(dir1, file)
       file2 = File.join(dir2, file)
-      unless FileUtils.compare_file(file1, file2)
-        puts "File #{file} differs"
-        puts Diffy::Diff.new(file1, file2, source: 'files', context: 1) if !options[:verbose].nil?
-        puts "\n" if !options[:verbose].nil?
-      end
+      next if FileUtils.compare_file(file1, file2)
+
+      puts "File #{file} differs"
+      puts Diffy::Diff.new(file1, file2, source: 'files', context: 1) unless options[:verbose].nil?
+      puts "\n" unless options[:verbose].nil?
     end
   end
 
   if only_in_dir1.empty? && only_in_dir2.empty? && common_files.all? { |file| FileUtils.compare_file(File.join(dir1, file), File.join(dir2, file)) }
-    puts "Directories are identical."
+    puts 'Directories are identical.'
   elsif options[:diff].nil?
-    puts "Directories have unidentical files.  Use -d (or --diff) to compare and -v (or --verbose) to see the differences"
+    puts 'Directories have unidentical files.  Use -d (or --diff) to compare and -v (or --verbose) to see the differences'
   end
 end
 
@@ -55,4 +55,4 @@ def compare_directories(dir1, dir2, options)
   puts "Usage: ruby #{__FILE__} [options] dir1 dir2"
   exit
 end
-compare_directories(ARGV[0], ARGV[1], options)
\ No newline at end of file
+compare_directories(ARGV[0], ARGV[1], options)