diff --git a/applet/contents/ui/ListItemBase.qml b/applet/contents/ui/ListItemBase.qml
--- a/applet/contents/ui/ListItemBase.qml
+++ b/applet/contents/ui/ListItemBase.qml
@@ -161,7 +161,7 @@
                                 Muted = false;
 
                                 if (type == "sink") {
-                                    playFeedback(CardIndex);
+                                    playFeedback(Index);
                                 }
 
                                 if (!pressed) {
diff --git a/applet/contents/ui/main.qml b/applet/contents/ui/main.qml
--- a/applet/contents/ui/main.qml
+++ b/applet/contents/ui/main.qml
@@ -153,7 +153,7 @@
             return;
         }
         if (!sinkIndex) {
-            sinkIndex = sinkModel.preferredSink.cardIndex;
+            sinkIndex = sinkModel.preferredSink.index;
         }
         feedback.play(sinkIndex);
     }