diff --git a/phases.go b/phases.go
index 7650e14..1b6a298 100644
--- a/phases.go
+++ b/phases.go
@@ -255,6 +255,19 @@ func (this *environment) phase70_5Trimming() bool {
 }
 
 func (this *environment) phase80Shutdown() bool {
+	ctx, done := context.WithTimeout(
+		context.Background(),
+		defaul(this.timing.shutdownTimeout.Load(), defaultShutdownTimeout))
+	defer done()
+	go func() {
+		<- ctx.Done()
+		if errors.Is(context.Cause(ctx), context.DeadlineExceeded) {
+			log.Println("XXX (80) shutdown timeout expired, performing emergency halt")
+			log.Printf("====== [%s] END =======", this.name)
+			os.Exit(1)
+		}
+	}()
+	
 	cause := context.Cause(this.ctx)
 	if cause != nil {
 		log.Println("XXX (80) shutting down because:", cause)