diff --git a/test/infrastructure/file/weapon_file_service_test.dart b/test/infrastructure/file/weapon_file_service_test.dart
index 47f928d36..548bdb37e 100644
--- a/test/infrastructure/file/weapon_file_service_test.dart
+++ b/test/infrastructure/file/weapon_file_service_test.dart
@@ -43,9 +43,12 @@ void main() {
         expect(detail.craftingMaterials, isEmpty);
       }
 
-      for (final ascMaterial in detail.ascensionMaterials) {
+      for (int i = 0; i < detail.ascensionMaterials.length; i++) {
+        final ascMaterial = detail.ascensionMaterials[i];
         expect(ascMaterial.level, inInclusiveRange(20, 80));
         checkItemAscensionMaterialFileModel(service.materials, ascMaterial.materials);
+        final expectedLength = i == 0 && detail.rarity == 1 ? 3 : 4;
+        expect(ascMaterial.materials.length, expectedLength);
       }
 
       final ascensionNumber = detail.stats.where((el) => el.isAnAscension).length;