diff --git a/src/pkg/net/sock.go b/src/pkg/net/sock.go
index 366e050ff3b..2359014ad63 100644
--- a/src/pkg/net/sock.go
+++ b/src/pkg/net/sock.go
@@ -52,6 +52,7 @@ func socket(net string, f, p, t int, la, ra syscall.Sockaddr, toAddr func(syscal
 
 	if ra != nil {
 		if err = fd.connect(ra); err != nil {
+			closesocket(s)
 			fd.Close()
 			return nil, err
 		}