diff --git a/Extra b/Extra
index 5131c7e..5cfb956 100644
--- a/Extra
+++ b/Extra
@@ -33,7 +33,7 @@
 //Problem 3: https://codeforces.com/problemset/problem/815/C
 //Problem 4 (Smaller to Larger merging): https://csacademy.com/contest/round-31/task/uniform-trees/
 //Problem 5 (Vaults): https://codeforces.com/problemset/problem/855/C
-//Problem 6: https://codeforces.com/problemset/problem/538/E
+//Problem 6 (Game on Tree): https://codeforces.com/problemset/problem/538/E
 
 -DFS
 //Problem 1 (Virtual Nodes):  https://codeforces.com/contest/821/problem/D