diff --git a/cmd/ctr/signals_linux.go b/cmd/ctr/signals_linux.go
index cb17133c2..0cc0a5022 100644
--- a/cmd/ctr/signals_linux.go
+++ b/cmd/ctr/signals_linux.go
@@ -34,7 +34,6 @@ var signalMap = map[string]syscall.Signal{
 	"TSTP":   unix.SIGTSTP,
 	"TTIN":   unix.SIGTTIN,
 	"TTOU":   unix.SIGTTOU,
-	"UNUSED": unix.SIGUNUSED,
 	"URG":    unix.SIGURG,
 	"USR1":   unix.SIGUSR1,
 	"USR2":   unix.SIGUSR2,