diff --git a/cmd/run.go b/cmd/run.go
index f50ea02..bc3256f 100644
--- a/cmd/run.go
+++ b/cmd/run.go
@@ -121,6 +121,10 @@ loop:
 		switch sig {
 		case nil:
 			if reloading {
+				if listener == nil {
+					// Failed to listen. Exit.
+					break loop
+				}
 				// Serve.
 				reloading = false
 				log.Warnln("[Reload] Serve")