diff --git a/src/pkg/net/http/httputil/dump.go b/src/pkg/net/http/httputil/dump.go
index 5a95eb8cc2..0b00356616 100644
--- a/src/pkg/net/http/httputil/dump.go
+++ b/src/pkg/net/http/httputil/dump.go
@@ -89,7 +89,7 @@ func DumpRequestOut(req *http.Request, body bool) ([]byte, error) {
 
 	t := &http.Transport{
 		Dial: func(net, addr string) (net.Conn, error) {
-			return &dumpConn{io.MultiWriter(pw, &buf), dr}, nil
+			return &dumpConn{io.MultiWriter(&buf, pw), dr}, nil
 		},
 	}