diff --git a/21-tantrum/README.md b/21-tantrum/README.md
index 186ddb9..3bb3547 100644
--- a/21-tantrum/README.md
+++ b/21-tantrum/README.md
@@ -1,4 +1,4 @@
-Style #20
+Style #21
 ==============================
 
 Constraints: