diff --git a/13-abstract-things/README.md b/13-abstract-things/README.md
index 5fcf928..eef8eed 100644
--- a/13-abstract-things/README.md
+++ b/13-abstract-things/README.md
@@ -1,4 +1,4 @@
-Style #11
+Style #13
 ==============================
 
 Constraints: