diff --git a/lib/screens/scan_tab.dart b/lib/screens/scan_tab.dart
index df7d0f1..a77b0e4 100644
--- a/lib/screens/scan_tab.dart
+++ b/lib/screens/scan_tab.dart
@@ -150,8 +150,10 @@ class ScanTabState extends State<ScanTab> {
                           .toList(),
                       onChanged: (id) {
                         setState(() {
-                          _selectedCollection = _collections
-                              .firstWhere((c) => c.id == id);
+                          final matching =
+                              _collections.where((c) => c.id == id);
+                          _selectedCollection =
+                              matching.isNotEmpty ? matching.first : null;
                         });
                       },
                     ),