diff --git a/signals.go b/signals.go
index 3a06d29f5..f4ea61e88 100644
--- a/signals.go
+++ b/signals.go
@@ -109,5 +109,8 @@ func (h *signalHandler) reap() (exits []exit, err error) {
 }
 
 func (h *signalHandler) Close() error {
-	return h.tty.Close()
+	if h.tty != nil {
+		return h.tty.Close()
+	}
+	return nil
 }