diff --git a/lib/ransack/helpers/form_helper.rb b/lib/ransack/helpers/form_helper.rb
index 84eb4a0..03a84ca 100644
--- a/lib/ransack/helpers/form_helper.rb
+++ b/lib/ransack/helpers/form_helper.rb
@@ -145,7 +145,7 @@ module Ransack
         private
 
           def parameters_hash(params)
-            if ::ActiveRecord::VERSION::MAJOR == 5 && params.respond_to?(:to_unsafe_h)
+            if ::ActiveRecord::VERSION::MAJOR >= 5 && params.respond_to?(:to_unsafe_h)
               params.to_unsafe_h
             else
               params