diff --git a/webgpu/webgpu-simple-compute.html b/webgpu/webgpu-simple-compute.html
index 24d6e2c7..21db4c74 100644
--- a/webgpu/webgpu-simple-compute.html
+++ b/webgpu/webgpu-simple-compute.html
@@ -25,7 +25,7 @@
       @group(0) @binding(0) var<storage, read_write> data: array<f32>;
 
       @compute @workgroup_size(1) fn computeSomething(
-        @builtin(global_invocation_id) id: vec3<u32>
+        @builtin(global_invocation_id) id: vec3u
       ) {
         let i = id.x;
         data[i] = data[i] * 2.0;