diff --git a/packages/cli/test/behavior/buy_ship_test.dart b/packages/cli/test/behavior/buy_ship_test.dart
index b10ec9c8..7f32bc1d 100644
--- a/packages/cli/test/behavior/buy_ship_test.dart
+++ b/packages/cli/test/behavior/buy_ship_test.dart
@@ -149,6 +149,10 @@ void main() {
     registerFallbackValue(Transaction.fallbackValue());
     when(() => db.insertTransaction(any())).thenAnswer((_) => Future.value());
 
+    registerFallbackValue(ShipyardListing.fallbackValue());
+    when(() => db.upsertShipyardListing(any()))
+        .thenAnswer((_) => Future.value());
+
     final logger = _MockLogger();
     expect(
       await runWithLogger(
diff --git a/packages/types/lib/src/shipyard_listing.dart b/packages/types/lib/src/shipyard_listing.dart
index 74061eb7..e3821745 100644
--- a/packages/types/lib/src/shipyard_listing.dart
+++ b/packages/types/lib/src/shipyard_listing.dart
@@ -11,6 +11,12 @@ class ShipyardListing {
     required this.shipTypes,
   });
 
+  /// Creates a shipyard listing with a fallback value.
+  @visibleForTesting
+  ShipyardListing.fallbackValue()
+      : waypointSymbol = WaypointSymbol.fromString('W-A-Y'),
+        shipTypes = {};
+
   /// Creates a new shipyard description from JSON data.
   factory ShipyardListing.fromJson(Map<String, dynamic> json) {
     final symbol = WaypointSymbol.fromJson(json['waypointSymbol'] as String);