diff --git a/lib/react/rails/test_helper.rb b/lib/react/rails/test_helper.rb
index b54f6e78b..d79b358b3 100644
--- a/lib/react/rails/test_helper.rb
+++ b/lib/react/rails/test_helper.rb
@@ -12,7 +12,6 @@ def assert_react_component(name)
         assert_select "div[data-react-class=?]", name do |dom|
           if block_given?
             props = JSON.parse(dom.attr("data-react-props"))
-            props.deep_transform_keys! { |key| key.to_s.underscore }
             props.deep_symbolize_keys!
 
             yield(props)
diff --git a/test/dummy_sprockets/app/views/pages/show.html.erb b/test/dummy_sprockets/app/views/pages/show.html.erb
index 4c46b12d2..63b4a2bee 100644
--- a/test/dummy_sprockets/app/views/pages/show.html.erb
+++ b/test/dummy_sprockets/app/views/pages/show.html.erb
@@ -4,7 +4,7 @@
 </ul>
 
 <div id='component-parent'>
-  <%= react_component 'GreetingMessage', { name: @name, last_name: "Last #{@name}", info: { name: @name } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
+  <%= react_component 'GreetingMessage', { name: @name, lastName: "Last #{@name}", info: { name: @name, lastName: "Last #{@name}" } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
   <ul>
     <%= react_component 'Todo', { todo: 'Another Component' }, { id: 'todo', prerender: @prerender } %>
   </ul>
diff --git a/test/dummy_webpacker1/app/views/pages/show.html.erb b/test/dummy_webpacker1/app/views/pages/show.html.erb
index 4c46b12d2..63b4a2bee 100644
--- a/test/dummy_webpacker1/app/views/pages/show.html.erb
+++ b/test/dummy_webpacker1/app/views/pages/show.html.erb
@@ -4,7 +4,7 @@
 </ul>
 
 <div id='component-parent'>
-  <%= react_component 'GreetingMessage', { name: @name, last_name: "Last #{@name}", info: { name: @name } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
+  <%= react_component 'GreetingMessage', { name: @name, lastName: "Last #{@name}", info: { name: @name, lastName: "Last #{@name}" } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
   <ul>
     <%= react_component 'Todo', { todo: 'Another Component' }, { id: 'todo', prerender: @prerender } %>
   </ul>
diff --git a/test/dummy_webpacker2/app/views/pages/show.html.erb b/test/dummy_webpacker2/app/views/pages/show.html.erb
index 4c46b12d2..63b4a2bee 100644
--- a/test/dummy_webpacker2/app/views/pages/show.html.erb
+++ b/test/dummy_webpacker2/app/views/pages/show.html.erb
@@ -4,7 +4,7 @@
 </ul>
 
 <div id='component-parent'>
-  <%= react_component 'GreetingMessage', { name: @name, last_name: "Last #{@name}", info: { name: @name } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
+  <%= react_component 'GreetingMessage', { name: @name, lastName: "Last #{@name}", info: { name: @name, lastName: "Last #{@name}" } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
   <ul>
     <%= react_component 'Todo', { todo: 'Another Component' }, { id: 'todo', prerender: @prerender } %>
   </ul>
diff --git a/test/dummy_webpacker3/app/views/pages/show.html.erb b/test/dummy_webpacker3/app/views/pages/show.html.erb
index 4c46b12d2..63b4a2bee 100644
--- a/test/dummy_webpacker3/app/views/pages/show.html.erb
+++ b/test/dummy_webpacker3/app/views/pages/show.html.erb
@@ -4,7 +4,7 @@
 </ul>
 
 <div id='component-parent'>
-  <%= react_component 'GreetingMessage', { name: @name, last_name: "Last #{@name}", info: { name: @name } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
+  <%= react_component 'GreetingMessage', { name: @name, lastName: "Last #{@name}", info: { name: @name, lastName: "Last #{@name}" } }, { id: 'component', class: "greeting-message", prerender: @prerender } %>
   <ul>
     <%= react_component 'Todo', { todo: 'Another Component' }, { id: 'todo', prerender: @prerender } %>
   </ul>
diff --git a/test/react/rails/test_helper_test.rb b/test/react/rails/test_helper_test.rb
index f0ca26593..e80dab106 100644
--- a/test/react/rails/test_helper_test.rb
+++ b/test/react/rails/test_helper_test.rb
@@ -11,8 +11,9 @@ class TestHelperTest < ActionDispatch::IntegrationTest
     assert_react_component "GreetingMessage"
     assert_react_component "GreetingMessage" do |props|
       assert_equal "Bob", props[:name]
-      assert_equal "Last Bob", props[:last_name]
+      assert_equal "Last Bob", props[:lastName]
       assert_equal "Bob", props[:info][:name]
+      assert_equal "Last Bob", props[:info][:lastName]
 
       assert_select "[id=?]", "component"
       assert_select "[class=?]", "greeting-message"