diff --git a/docs/en/Object-To-Object-Mapping.md b/docs/en/Object-To-Object-Mapping.md
index f184468bbc..f3eab7de67 100644
--- a/docs/en/Object-To-Object-Mapping.md
+++ b/docs/en/Object-To-Object-Mapping.md
@@ -335,12 +335,12 @@ For example, we might have a simple source and destination type:
 ````csharp
 public class Source
 {
-	public int Value { get; set; }
+    public int Value { get; set; }
 }
 
 public class Destination
 {
-	public int Value { get; set; }
+    public int Value { get; set; }
 }
 ````