diff --git a/extra/cs2/README.md b/extra/cs2/README.md
index eafa4d2..fccaf48 100644
--- a/extra/cs2/README.md
+++ b/extra/cs2/README.md
@@ -1,2 +1,3 @@
+cs2
 crosshair.html [demo](https://s1ne.com/zxygen.html) <br>
 pattern.html [demo](https://s1ne.com/cxrb.html)