diff --git a/public/static/meshes/quiz/quiz-s2.gltf b/public/static/meshes/quiz/quiz-s2.gltf
index a4b82c3..d371c4e 100644
--- a/public/static/meshes/quiz/quiz-s2.gltf
+++ b/public/static/meshes/quiz/quiz-s2.gltf
@@ -62,6 +62,7 @@
 			}
 		},
 		{
+			"doubleSided":true,
 			"name":"moss",
 			"normalTexture":{
 				"index":2