diff --git a/Examples/Tests/Layer.js b/Examples/Tests/Layer.js
index e495b69acaa3c0c4c690cd28465aab561aa4ba6b..ff2d490fdf1be2ac0a3a4e699d6f22c57a1157b0 100644
--- a/Examples/Tests/Layer.js
+++ b/Examples/Tests/Layer.js
@@ -13,7 +13,7 @@ uniform sampler2D t2;
 void main () {
   vec4 c1 = texture2D(t1, uv);
   vec4 c2 = texture2D(t2, uv);
-  gl_FragColor = mix(c1, c2, c2.a);
+  gl_FragColor = vec4(mix(c1.rgb, c2.rgb, c2.a), 1.0);
 }
 `
   }