diff --git a/SolidCP/Sources/SolidCP.Providers.Mail.SmarterMail100/SmarterMail100.cs b/SolidCP/Sources/SolidCP.Providers.Mail.SmarterMail100/SmarterMail100.cs
index 3d107dc3f..f0e34bd11 100644
--- a/SolidCP/Sources/SolidCP.Providers.Mail.SmarterMail100/SmarterMail100.cs
+++ b/SolidCP/Sources/SolidCP.Providers.Mail.SmarterMail100/SmarterMail100.cs
@@ -41,6 +41,8 @@
 using Newtonsoft.Json;
 using System.Net.Http;
 using System.Threading.Tasks;
+using System.Globalization;
+using System.Collections;
 
 namespace SolidCP.Providers.Mail
 {