diff --git a/selfdrive/pandad/pandad.cc b/selfdrive/pandad/pandad.cc
index 863a796a5c2103..a47c4ba03fc6e5 100644
--- a/selfdrive/pandad/pandad.cc
+++ b/selfdrive/pandad/pandad.cc
@@ -170,7 +170,7 @@ void can_send(std::vector<Panda *> &pandas, bool fake_send) {
 
   const bool non_blocking = true;
 
-  // run as fast as messages come in
+  // Drain sendcan socket and relay messages to Pandas
   while (!do_exit && check_all_connected(pandas)) {
     std::unique_ptr<Message> msg(subscriber->receive(non_blocking));
     if (!msg) {