diff --git a/src/controls/templates/OverlaySheet.qml b/src/controls/templates/OverlaySheet.qml
--- a/src/controls/templates/OverlaySheet.qml
+++ b/src/controls/templates/OverlaySheet.qml
@@ -146,6 +146,9 @@
         }
     }
     onWidthChanged: {
+        if (!contentItem.contentItem)
+            return;
+
         var width = Math.max(root.width/2, Math.min(root.width, root.contentItem.implicitWidth));
         contentItem.contentItem.x = (root.width - width)/2
         contentItem.contentItem.width = width;