diff --git a/lib/src/responsive_datatable.dart b/lib/src/responsive_datatable.dart
index b985496..695afa8 100644
--- a/lib/src/responsive_datatable.dart
+++ b/lib/src/responsive_datatable.dart
@@ -379,6 +379,7 @@ class _ResponsiveDatatableState extends State<ResponsiveDatatable> {
             ),
           ),
           if (widget.isExpandRows &&
+              widget.expanded != null &&
               widget.expanded![index] &&
               widget.dropContainer != null)
             widget.dropContainer!(data)