diff --git a/docs/lab/index.html b/docs/lab/index.html
index 1e9fc0c9c..a9c6c2a42 100644
--- a/docs/lab/index.html
+++ b/docs/lab/index.html
@@ -1304,7 +1304,7 @@ document.head.appendChild(fontCSS)
         <span>Variable axes:</span>
         <label class="label-and-value">
           <span>Weight:</span>
-          <input type="range" value="400" min="100" max="900" name="varWeight">
+          <input type="range" value="400" step="10" min="100" max="900" name="varWeight">
           <input type="number" value="400" step="1" min="100" max="900" name="varWeightNum">
         </label>
         <label class="label-and-value">