correct playground http://play.golang.org/p/qPI9qGKaDB
diff --git a/SliceTricks.md b/SliceTricks.md
index c93808c..1589720 100644
--- a/SliceTricks.md
+++ b/SliceTricks.md
@@ -29,7 +29,7 @@
 
 **Delete without preserving order**
 ```go
-a[i] = a[len(a)-1]
+a[i] = a[len(a)-1] 
 a = a[:len(a)-1]
 
 ```