diff --git a/engine/samples/voxels/main.cpp b/engine/samples/voxels/main.cpp
index e60e5b786..e15a53ad3 100644
--- a/engine/samples/voxels/main.cpp
+++ b/engine/samples/voxels/main.cpp
@@ -74,7 +74,7 @@ int main(int argc, char** argv)
     cubos.startupSystem(spawnLightSystem);
     /// [Adding systems]
     cubos.startupSystem(setPaletteSystem).after("cubos.renderer.init");
-    cubos.system(spawnCarSystem);
+    cubos.startupSystem(spawnCarSystem).tagged("cubos.assets");
     /// [Adding systems]
 
     cubos.run();