diff --git a/src/pkg/net/fd.go b/src/pkg/net/fd.go
index fa163eb..df4dbce 100644
--- a/src/pkg/net/fd.go
+++ b/src/pkg/net/fd.go
@@ -122,9 +122,13 @@
 		doWakeup = true
 	}
 
-	if err := s.poll.AddFD(intfd, mode, false); err != nil {
+	wake, err := s.poll.AddFD(intfd, mode, false)
+	if err != nil {
 		panic("pollServer AddFD " + err.String())
 	}
+	if wake {
+		doWakeup = true
+	}
 
 	s.Unlock()