diff --git a/12-kinds-of-things/README.md b/12-kinds-of-things/README.md
index 707c892..7f4a500 100644
--- a/12-kinds-of-things/README.md
+++ b/12-kinds-of-things/README.md
@@ -1,4 +1,4 @@
-Style #9
+Style #12
 ==============================
 
 Constraints: