Весной первым делом расцвел АвтоВАЗ

AirBomber/AirBomber/PlanesCollectionInfo.cs

@@ -17,7 +17,7 @@ namespace AirBomber
         }
         public bool Equals(PlanesCollectionInfo? other)
         {
-            if (other == null)
+            if (other == null || other.Name == null)
                 throw new ArgumentNullException(nameof(other));
             return Name == other.Name;
         }