diff --git a/metadapta.go b/metadapta.go
index 2befbdb..9b35d1d 100644
--- a/metadapta.go
+++ b/metadapta.go
@@ -413,7 +413,7 @@ type writerA struct {
 }
 
 func (this *writerA) Write(data []byte) (n int, err error) {
-	if !this.open { return 0, io.EOF }
+	if !this.open || this.parent.closed.Load() { return 0, io.EOF }
 	toSend := data
 	for len(toSend) > 0 {
 		nn, err := this.writeOne(toSend)