diff --git a/actionview/lib/action_view/helpers/translation_helper.rb b/actionview/lib/action_view/helpers/translation_helper.rb
index ae1c93e12f..67c86592b9 100644
--- a/actionview/lib/action_view/helpers/translation_helper.rb
+++ b/actionview/lib/action_view/helpers/translation_helper.rb
@@ -138,7 +138,7 @@ module ActionView
         end
 
         def html_safe_translation_key?(key)
-          /(\b|_|\.)html$/.match?(key.to_s)
+          /([_.]|\b)html\z/.match?(key.to_s)
         end
     end
   end