diff --git a/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/ListGenericObjects.cs b/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/ListGenericObjects.cs
index 7b0893a..ecb5f7a 100644
--- a/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/ListGenericObjects.cs
+++ b/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/ListGenericObjects.cs
@@ -58,12 +58,9 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
 
     public int Insert(T obj, IEqualityComparer<T?>? comparer)
     {
-        if (comparer == null)
+        if (_collection.Contains(obj, comparer))
         {
-            if (_collection.Contains(obj, comparer))
-            {
-                throw new ObjectNotUniqueException();
-            }
+            throw new ObjectNotUniqueException();
         }
 
         if (Count == _maxCount) { throw new CollectionOverflowException(_collection.Count); }
@@ -74,12 +71,9 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
 
     public int Insert(T obj, int position, IEqualityComparer<T?>? comparer)
     {
-        if (comparer == null)
+        if (_collection.Contains(obj, comparer))
         {
-            if (_collection.Contains(obj, comparer))
-            {
-                throw new ObjectNotUniqueException();
-            }
+            throw new ObjectNotUniqueException(position);
         }
 
         if (position < 0 || position >= Count) throw new PositionOutOfCollectionException();
@@ -87,7 +81,6 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
         _collection.Insert(position, obj);
 
         return position;
-
     }
 
     public T Remove(int position)
diff --git a/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/MassiveGenericObjects.cs b/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/MassiveGenericObjects.cs
index 9b85900..3d71b07 100644
--- a/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/MassiveGenericObjects.cs
+++ b/ProjectAirFighter/ProjectAirFighter/CollectionGenericObjects/MassiveGenericObjects.cs
@@ -90,7 +90,7 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
             foreach (T? item in _collection)
             {
                 if ((comparer as IEqualityComparer<DrawningWarPlane>).Equals(obj as DrawningWarPlane, item as DrawningWarPlane))
-                    throw new ObjectNotUniqueException();
+                    throw new ObjectNotUniqueException(position);
             }
         }
 
diff --git a/ProjectAirFighter/ProjectAirFighter/Drawnings/DrawiningPlaneEqutables.cs b/ProjectAirFighter/ProjectAirFighter/Drawnings/DrawiningPlaneEqutables.cs
index 8906a18..e10d2e3 100644
--- a/ProjectAirFighter/ProjectAirFighter/Drawnings/DrawiningPlaneEqutables.cs
+++ b/ProjectAirFighter/ProjectAirFighter/Drawnings/DrawiningPlaneEqutables.cs
@@ -44,6 +44,7 @@ public class DrawiningPlaneEqutables : IEqualityComparer<DrawningWarPlane?>
         {
             EntityAirFighter _x = (EntityAirFighter) x.EntityFighter;
             EntityAirFighter _y = (EntityAirFighter) x.EntityFighter;
+
             if (_x.AdditionalColor != _y.AdditionalColor)
             {
                 return false;