diff --git a/lenet/index.html b/lenet/index.html
index 7ee1a339..0a57c2c9 100644
--- a/lenet/index.html
+++ b/lenet/index.html
@@ -34,8 +34,8 @@
                 <label class="btn btn-outline-info" name="polyfill">
                   <input type="radio" name="backend" id="polyfill_gpu" autocomplete="off">WebGL (GPU)
                 </label>
-                <label class="btn btn-outline-info" name="webnn">
-                  <input type="radio" name="backend" id="webnn_cpu" autocomplete="off">WebNN (CPU)
+                <label class="btn disabled btn-outline-secondary" name="webnn">
+                  <input type="radio" name="backend" id="webnn_cpu" autocomplete="off" disabled>WebNN (CPU)
                 </label>
                 <label class="btn btn-outline-info" name="webnn">
                   <input type="radio" name="backend" id="webnn_gpu" autocomplete="off">WebNN (GPU)