diff --git a/panels/dock/AppletItemButton.qml b/panels/dock/AppletItemButton.qml
index 73979ea17..523b6fd86 100644
--- a/panels/dock/AppletItemButton.qml
+++ b/panels/dock/AppletItemButton.qml
@@ -41,6 +41,8 @@ IconButton {
     }
 
     Component.onCompleted: {
-        contentItem.smooth = false
+        contentItem.smooth = Qt.binding(function () {
+            return Math.round(contentItem.rotation) % 90 !== 0
+        })
     }
 }