diff --git a/CheatSheet.md b/CheatSheet.md
index 80ac158..5fee36a 100644
--- a/CheatSheet.md
+++ b/CheatSheet.md
@@ -519,3 +519,4 @@ is equivalent to
 ```scala
     (1 until n).flatMap(i => (1 until i).filter(j => isPrime(i + j)).map(j => (i, j)))
 ```
+