diff --git a/lib/github_changelog_generator/generator/generator_generation.rb b/lib/github_changelog_generator/generator/generator_generation.rb
index 84acd5c..7810e9f 100644
--- a/lib/github_changelog_generator/generator/generator_generation.rb
+++ b/lib/github_changelog_generator/generator/generator_generation.rb
@@ -22,7 +22,7 @@ module GitHubChangelogGenerator
       log += File.read(options[:base]) if File.file?(options[:base])
 
       credit_line = "\n\n\\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*"
-      log.gsub!(credit_line, '') # Remove old credit lines
+      log.gsub!(credit_line, "") # Remove old credit lines
       log += credit_line
 
       @log = log