diff --git a/tests/html/test_webgl_triangle.html b/tests/html/test_webgl_triangle.html
index b55a746b4a2..980049f4466 100644
--- a/tests/html/test_webgl_triangle.html
+++ b/tests/html/test_webgl_triangle.html
@@ -19,9 +19,7 @@
    }
 </script>
 <script id="fragmentshader" type="x-shader">
-   #ifdef GL_ES
-   precision highp float;
-   #endif
+   precision mediump float;
 
    varying vec4 aVertexColor;