diff --git a/mozilla/netwerk/test/unit/test_plaintext_sniff.js b/mozilla/netwerk/test/unit/test_plaintext_sniff.js
index 3bd4fee8002..9d2b6198969 100644
--- a/mozilla/netwerk/test/unit/test_plaintext_sniff.js
+++ b/mozilla/netwerk/test/unit/test_plaintext_sniff.js
@@ -166,9 +166,6 @@ function makeHandler(headerIdx, bodyIdx) {
 
 var httpserv;
 function run_test() {
-  // Disabling test for now because tinderbox somehow fails to deal
-  return;
-  
   httpserv = new nsHttpServer();
 
   for (i = 0; i < contentTypeHeaderList.length; ++i) {