diff --git a/test/merge/kdbx_merge_test.dart b/test/merge/kdbx_merge_test.dart
index 94a868f..7548cb0 100644
--- a/test/merge/kdbx_merge_test.dart
+++ b/test/merge/kdbx_merge_test.dart
@@ -17,7 +17,7 @@ void main() {
   }
 
   setUp(() {
-    DateTime.fromMillisecondsSinceEpoch(0);
+    now = DateTime.fromMillisecondsSinceEpoch(0);
   });
   group('Simple merges', () {
     Future<KdbxFile> createSimpleFile() async {