diff --git a/lab0510/lab0510.md b/lab0510/lab0510.md
index 61cd4cbb1aa7d95593c6d3e023fc225768fa0a32..8d131e65a5b0e37ad14cc0331dde7f171a518950 100644
--- a/lab0510/lab0510.md
+++ b/lab0510/lab0510.md
@@ -5,3 +5,4 @@
 * GIT - WWW IDE edited.
 
 * br_a : edited at ssh.ajousw.kr
+* br_a : 2nd change.