diff --git a/src/commander_atan.cpp b/src/commander_atan.cpp
index 72128d4..456c1d7 100644
--- a/src/commander_atan.cpp
+++ b/src/commander_atan.cpp
@@ -1,3 +1,5 @@
+// this code doesn’t work
+// :-(
 #include <ros/ros.h>
 #include <ros/time.h>
 #include <locale.h>