diff --git a/lib/puppet/functions/validate_yum_hash.rb b/lib/puppet/functions/validate_yum_hash.rb
index e7dd1cf..b2e9cba 100644
--- a/lib/puppet/functions/validate_yum_hash.rb
+++ b/lib/puppet/functions/validate_yum_hash.rb
@@ -19,6 +19,7 @@ Puppet::Functions.create_function(:validate_yum_hash) do
       'metadata_expire',
       'metalink',
       'mirrorlist',
+      'module_hotfixes',
       'priority',
       'protect',
       'provider',