diff --git a/collects/tests/mzscheme/net.ss b/collects/tests/mzscheme/net.ss
index 016a3b29b5..4249b71d14 100644
--- a/collects/tests/mzscheme/net.ss
+++ b/collects/tests/mzscheme/net.ss
@@ -130,7 +130,7 @@
 
 (require (lib "base64.ss" "net")
 	 (lib "qp.ss" "net")
-	 (lib "thread.ss"))
+	 (lib "port.ss"))
 
 (define tricky-strings
   (list (make-bytes 200 32)