diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs
index 8c4c3b5..e0aa358 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs
@@ -42,7 +42,7 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
 
     public int Insert(T obj, int position)
     {
-        if (Count >= _maxCount || position < 0 || position > _maxCount)
+        if (Count >= _maxCount || position < 0 || position >= _maxCount)
         {
             return -1;
         }
diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs
index 1a19758..47ef55d 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs
@@ -52,7 +52,10 @@ public class StorageCollection<T>
 
     public void DelCollection(string name)
     {
-        _storages.Remove(name);
+        if (_storages.ContainsKey(name))
+        {
+            _storages.Remove(name);
+        }
     }
 
     public ICollectionGenericObjects<T>? this[string name]