diff --git a/src/net/rpc/client_test.go b/src/net/rpc/client_test.go
index fb838eb34f2b456e8db6840a7ea0d9158952361a..5dd111b299ffa420b724a4ab4751f133a40f646b 100644
--- a/src/net/rpc/client_test.go
+++ b/src/net/rpc/client_test.go
@@ -8,6 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"net"
+	"runtime"
 	"strings"
 	"testing"
 )