diff --git a/SlackAPI/Block.cs b/SlackAPI/Block.cs
index 7a53873..4fd670f 100644
--- a/SlackAPI/Block.cs
+++ b/SlackAPI/Block.cs
@@ -50,7 +50,7 @@ public class HeaderBlock : IBlock
     {
 	    public string type { get; } = BlockTypes.Header;
 	    public Text text { get; set; }
-        public string block_id { get; set; }
+	    public string block_id { get; set; }
     }
     public class Text : IElement
     {