diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index f3237f82d5..775993fe03 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -708,9 +708,11 @@ module ActionView
 
       private
         def option_html_attributes(element)
-          return {} unless Array === element
-
-          Hash[element.select { |e| Hash === e }.reduce({}, :merge).map { |k, v| [k, v] }]
+          if Array === element
+            element.select { |e| Hash === e }.reduce({}, :merge)
+          else
+            {}
+          end
         end
 
         def option_text_and_value(option)
diff --git a/actionpack/test/template/form_options_helper_test.rb b/actionpack/test/template/form_options_helper_test.rb
index d234e6633c..e1ce5c5568 100644
--- a/actionpack/test/template/form_options_helper_test.rb
+++ b/actionpack/test/template/form_options_helper_test.rb
@@ -1164,11 +1164,12 @@ class FormOptionsHelperTest < ActionView::TestCase
     )
   end
 
-  def test_option_html_attributes_from_without_hash
-    assert_equal(
-      {},
-      option_html_attributes([ 'foo', 'bar' ])
-    )
+  def test_option_html_attributes_with_no_array_element
+    assert_equal({}, option_html_attributes('foo'))
+  end
+
+  def test_option_html_attributes_without_hash
+    assert_equal({}, option_html_attributes([ 'foo', 'bar' ]))
   end
 
   def test_option_html_attributes_with_single_element_hash