diff --git a/Gemfile b/Gemfile
index 89e16449..f656ddfe 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,7 @@ source 'https://rubygems.org'
 
 gemspec name: 'recog-content'
 
+gem 'ffi', '1.16.3'
 gem 'recog', '~>3.1'
 
 group :test do
diff --git a/bin/recog_cleanup b/bin/recog_cleanup
index 234ac978..ae3070af 100755
--- a/bin/recog_cleanup
+++ b/bin/recog_cleanup
@@ -9,7 +9,7 @@ Dir["#{File.expand_path(File.join(File.dirname(__FILE__), '..', 'xml'))}/*.xml"]
   data = File.read(f)
              .gsub(/\s+$/, '')                           # Trailing whitespace and empty lines
              .gsub('</fingerprint>', "</fingerprint>\n") # Every fingerprint should have an empty line after it
-             .gsub('-->', "-->\n")                        # Every comment should have an empty line after it
+             .gsub('-->', "-->\n") # Every comment should have an empty line after it
 
   File.write(f, data)
 end