diff --git a/cmd/lotus-storage-miner/run.go b/cmd/lotus-storage-miner/run.go
index 83d78172e..a5d996f78 100644
--- a/cmd/lotus-storage-miner/run.go
+++ b/cmd/lotus-storage-miner/run.go
@@ -163,8 +163,10 @@ var runCmd = &cli.Command{
 		sigChan := make(chan os.Signal, 2)
 		go func() {
 			select {
-			case <-sigChan:
+			case sig := <-sigChan:
+				log.Warnw("received shutdown", "signal", sig)
 			case <-shutdownChan:
+				log.Warn("received shutdown")
 			}
 
 			log.Warn("Shutting down...")
diff --git a/cmd/lotus/rpc.go b/cmd/lotus/rpc.go
index fbe05e938..9718deb3a 100644
--- a/cmd/lotus/rpc.go
+++ b/cmd/lotus/rpc.go
@@ -66,8 +66,10 @@ func serveRPC(a api.FullNode, stop node.StopFunc, addr multiaddr.Multiaddr, shut
 	shutdownDone := make(chan struct{})
 	go func() {
 		select {
-		case <-sigCh:
+		case sig := <-sigCh:
+			log.Warnw("received shutdown", "signal", sig)
 		case <-shutdownCh:
+			log.Warn("received shutdown")
 		}
 
 		log.Warn("Shutting down...")