diff --git a/osu.Game/Models/RealmUser.cs b/osu.Game/Models/RealmUser.cs
index ff35528827..5fccff597c 100644
--- a/osu.Game/Models/RealmUser.cs
+++ b/osu.Game/Models/RealmUser.cs
@@ -11,7 +11,7 @@ namespace osu.Game.Models
     {
         public int OnlineID { get; set; } = 1;
 
-        public string Username { get; set; }
+        public string Username { get; set; } = string.Empty;
 
         public bool IsBot => false;