diff --git a/src/Discord.Net.Core/Entities/Permissions/GuildPermissions.cs b/src/Discord.Net.Core/Entities/Permissions/GuildPermissions.cs
index 710591bf3..2b7fb4ee5 100644
--- a/src/Discord.Net.Core/Entities/Permissions/GuildPermissions.cs
+++ b/src/Discord.Net.Core/Entities/Permissions/GuildPermissions.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;