diff --git a/tools/CTF.md b/tools/CTF.md
index a14a41d55d..32891cd389 100644
--- a/tools/CTF.md
+++ b/tools/CTF.md
@@ -11,7 +11,7 @@ Welcome to the first part of the comma CTF!
 
 getting started
 ```bash
-# start the route reply
+# start the route replay
 cd tools/replay
 ./replay '0c7f0c7f0c7f0c7f|2021-10-13--13-00-00' --dcam --ecam