diff --git a/mdc_100_series/lib/backdrop.dart b/mdc_100_series/lib/backdrop.dart
index 7bf6ad63e6..f1acd4e8d2 100644
--- a/mdc_100_series/lib/backdrop.dart
+++ b/mdc_100_series/lib/backdrop.dart
@@ -224,7 +224,10 @@ class _BackdropState extends State<Backdrop>
     return Stack(
       key: _backdropKey,
       children: <Widget>[
-        widget.backLayer,
+        ExcludeSemantics(
+          child: widget.backLayer,
+          excluding: _frontLayerVisible,
+        ),
         PositionedTransition(
           rect: layerAnimation,
           child: _FrontLayer(