diff --git a/examples/webgl_gpgpu_water.html b/examples/webgl_gpgpu_water.html
index d01f5a29038e593a53c9603414ab2cbef8b61737..6a5a5afc66e0e0f686c56a64356c618a3e7d61e5 100644
--- a/examples/webgl_gpgpu_water.html
+++ b/examples/webgl_gpgpu_water.html
@@ -421,7 +421,7 @@
 					var mult = 0.025;
 					var r = 0;
 					for ( var i = 0; i < 15; i++ ) {
-						r += multR * simplex.noise3d( x * mult, y * mult, z * mult );
+						r += multR * simplex.noise( x * mult, y * mult );
 						multR *= 0.53 + 0.025 * i;
 						mult *= 1.25;
 					}