diff --git a/Elwig/Models/Entities/Member.cs b/Elwig/Models/Entities/Member.cs
index d3f6087..01fe45a 100644
--- a/Elwig/Models/Entities/Member.cs
+++ b/Elwig/Models/Entities/Member.cs
@@ -46,7 +46,7 @@ namespace Elwig.Models.Entities {
 
         public string AdministrativeName => AdministrativeName1 + " " + AdministrativeName2;
 
-        public string AdministrativeName1 => FamilyName.ToUpper();
+        public string AdministrativeName1 => FamilyName.Replace('ß', 'ẞ').ToUpper();
 
         public string AdministrativeName2 =>
             (Prefix != null ? Prefix + " " : "") +