diff --git a/Modbus.Net/Modbus.Net.Core/ConfigurationManager.cs b/Modbus.Net/Modbus.Net.Core/ConfigurationManager.cs
index 09dd844..4b30e6b 100644
--- a/Modbus.Net/Modbus.Net.Core/ConfigurationManager.cs
+++ b/Modbus.Net/Modbus.Net.Core/ConfigurationManager.cs
@@ -13,7 +13,6 @@ namespace Modbus.Net
         /// </summary>
         private static readonly IConfigurationBuilder Builder = new ConfigurationBuilder()
             .SetBasePath(RootPath ?? Directory.GetCurrentDirectory())
-            .AddJsonFile("appsettings.json")
             .AddXmlFile("App.config");
 
         /// <summary>