diff --git a/src/Umbraco.Core/Constants-Security.cs b/src/Umbraco.Core/Constants-Security.cs
index f900288ef5..2b6244debb 100644
--- a/src/Umbraco.Core/Constants-Security.cs
+++ b/src/Umbraco.Core/Constants-Security.cs
@@ -25,7 +25,7 @@ namespace Umbraco.Core
             /// <summary>
             /// The name of the 'unknown' user.
             /// </summary>
-            public const string UnknownUserName = "SYTEM";
+            public const string UnknownUserName = "SYSTEM";
 
             public const string AdminGroupAlias = "admin";
             public const string EditorGroupAlias = "editor";