diff --git a/demo/index.html b/demo/index.html
index 594f0ee7..f56af820 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -76,7 +76,7 @@
             <input type="number" id="padding" />
           </div>
           <div style="display: inline-block; margin-right: 16px;">
-            <label for="selectionBackground">selectionBackground</label>
+            <label for="selectionBackground">SelectionBackground</label>
             <input type="text" id="selectionBackground" />
           </div>
           <div style="display: inline-block; margin-right: 16px;">