diff --git a/src/main.cpp b/src/main.cpp
index 661eb49..d859f4d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -292,6 +292,8 @@ int main(int, char*[]) {
             
             ImGui::EndMainMenuBar();
         }
+
+        ImGui::Begin("Render Options");
         
         ImGui::Checkbox("Use BVH", &use_bvh);
         ImGui::InputInt("Indirect Samples", &num_indirect_samples);
@@ -317,7 +319,7 @@ int main(int, char*[]) {
         
         if(ImGui::Button("Dump to file"))
             dump_to_file();
-        
+
         if(image_dirty) {
             update_texture();
             image_dirty = false;
@@ -330,7 +332,9 @@ int main(int, char*[]) {
                 ImGui::TreePop();
             }
         }
-        
+
+        ImGui::End();
+
         ImGui::Render();
         
         auto& io = ImGui::GetIO();