diff --git a/lib/simple_form/components/html5.rb b/lib/simple_form/components/html5.rb
index 545b8f16..e3bec5bd 100644
--- a/lib/simple_form/components/html5.rb
+++ b/lib/simple_form/components/html5.rb
@@ -9,7 +9,7 @@ module SimpleForm
         @html5 = true
         if has_required?
           input_html_options[:required] = true
-          input_html_options['aria-required'] = true
+          input_html_options[:'aria-required'] = true
         end
         nil
       end