diff --git a/DnsServerCore/Dns/Zones/Zone.cs b/DnsServerCore/Dns/Zones/Zone.cs
index ab20301c..f16f4e4a 100644
--- a/DnsServerCore/Dns/Zones/Zone.cs
+++ b/DnsServerCore/Dns/Zones/Zone.cs
@@ -1,6 +1,6 @@
 /*
 Technitium DNS Server
-Copyright (C) 2020  Shreyas Zare (shreyas@technitium.com)
+Copyright (C) 2021  Shreyas Zare (shreyas@technitium.com)
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -32,7 +32,7 @@ namespace DnsServerCore.Dns.Zones
         #region variables
 
         protected readonly string _name;
-        protected readonly ConcurrentDictionary<DnsResourceRecordType, IReadOnlyList<DnsResourceRecord>> _entries = new ConcurrentDictionary<DnsResourceRecordType, IReadOnlyList<DnsResourceRecord>>();
+        protected readonly ConcurrentDictionary<DnsResourceRecordType, IReadOnlyList<DnsResourceRecord>> _entries;
 
         #endregion
 
@@ -41,6 +41,13 @@ namespace DnsServerCore.Dns.Zones
         protected Zone(string name)
         {
             _name = name;
+            _entries = new ConcurrentDictionary<DnsResourceRecordType, IReadOnlyList<DnsResourceRecord>>(1, 5);
+        }
+
+        protected Zone(string name, int capacity)
+        {
+            _name = name;
+            _entries = new ConcurrentDictionary<DnsResourceRecordType, IReadOnlyList<DnsResourceRecord>>(1, capacity);
         }
 
         #endregion