diff --git a/CHANGELOG.md b/CHANGELOG.md
index 373ec5232f3d4e90ae6e149306005c727d9b066f..1e88da77feb9fdca5ff573200c94ef1eca3a393a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- resolved cookstyle error: libraries/helpers.rb:31:18 convention: `Style/HashEachMethods`
+
 ## [Unreleased]
 
 ### Added
diff --git a/libraries/helpers.rb b/libraries/helpers.rb
index 5ef6db909371734ce1f31470f97ee8dc701064fe..43a96b9d529f557c8a3c107279de05a773305cd0 100644
--- a/libraries/helpers.rb
+++ b/libraries/helpers.rb
@@ -28,7 +28,7 @@ class Chef
       def self.object_to_ossec(object)
         case object
         when Hash
-          object.keys.each do |k|
+          object.each_key do |k|
             if k == 'content!'
               object[:content!] = object_to_ossec(object.delete(k))
             else