diff --git a/system/test/cubeTexture_test.html b/system/test/cubeTexture_test.html
index f5b6a27..334430c 100644
--- a/system/test/cubeTexture_test.html
+++ b/system/test/cubeTexture_test.html
@@ -129,7 +129,7 @@
           color: 0xffffff,
           envMap: textureCube,
         });
-        const geometry = new THREE.BoxGeometry(50, 50, 50);
+        const geometry = new THREE.BoxGeometry(30, 30, 30);
         const mesh = new THREE.Mesh(geometry, material);
         scene.add(mesh);