diff --git a/src/doompanning.cc b/src/doompanning.cc
index ba5615b..d5679c7 100644
--- a/src/doompanning.cc
+++ b/src/doompanning.cc
@@ -261,6 +261,7 @@ ControllerActions run_ui(ControllerContext &ctx)
 int doom_controller_loop(ControllerContext &ctx)
 {
     static constexpr ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
     ControllerActions actions = {};
 
     while (!ctx.quit)
@@ -301,13 +302,15 @@ int doom_controller_loop(ControllerContext &ctx)
         ImGui::NewFrame();
 
         actions = run_ui(ctx);
-        // TODO render dooms
 
         // Rendering
-        ImGui::Render();
-        auto [r, g, b, a] = imvec4_to_rgba(clear_color);
+        const auto [r, g, b, a] = imvec4_to_rgba(clear_color);
         SDL_SetRenderDrawColor(ctx.renderer, r, g, b, a);
         SDL_RenderClear(ctx.renderer);
+
+        // TODO render dooms
+
+        ImGui::Render();
         ImGui_ImplSDLRenderer_RenderDrawData(ImGui::GetDrawData());
         SDL_RenderPresent(ctx.renderer);
     }
diff --git a/src/dp_util.hpp b/src/dp_util.hpp
index 7d49bf1..23e5c56 100644
--- a/src/dp_util.hpp
+++ b/src/dp_util.hpp
@@ -10,7 +10,7 @@
 
 #include "dp_types.h"
 
-inline std::tuple<u8, u8, u8, u8> imvec4_to_rgba(const ImVec4 &color)
+inline constexpr std::tuple<u8, u8, u8, u8> imvec4_to_rgba(const ImVec4 &color)
 {
     return
     {
@@ -172,4 +172,4 @@ struct ExampleAppLog
     }
 };
 
-#endif // SRC_DP_UTIL_HPP
\ No newline at end of file
+#endif // SRC_DP_UTIL_HPP