diff --git a/DysonNetwork.Sphere/Chat/ChatRoomController.cs b/DysonNetwork.Sphere/Chat/ChatRoomController.cs
index e59208a..bc6191c 100644
--- a/DysonNetwork.Sphere/Chat/ChatRoomController.cs
+++ b/DysonNetwork.Sphere/Chat/ChatRoomController.cs
@@ -164,7 +164,7 @@ public class ChatRoomController(
 
     public class ChatRoomRequest
     {
-        [Required] [MaxLength(1024)] public string? Name { get; set; }
+        [Required][MaxLength(1024)] public string? Name { get; set; }
         [MaxLength(4096)] public string? Description { get; set; }
         [MaxLength(32)] public string? PictureId { get; set; }
         [MaxLength(32)] public string? BackgroundId { get; set; }
@@ -576,7 +576,7 @@ public class ChatRoomController(
             Status = -100
         });
 
-        if (relationship != null && relationship.Relationship.Status == -100)
+        if (relationship?.Relationship != null && relationship.Relationship.Status == -100)
             return StatusCode(403, "You cannot invite a user that blocked you.");
 
         var chatRoom = await db.ChatRooms
@@ -985,4 +985,4 @@ public class ChatRoomController(
             }
         );
     }
-}
\ No newline at end of file
+}