--- a/netwerk/test/unit/xpcshell.ini
+++ b/netwerk/test/unit/xpcshell.ini
@@ -258,18 +258,20 @@ fail-if = os == "android"
 [test_simple.js]
 [test_sockettransportsvc_available.js]
 [test_socks.js]
 # Bug 675039: test fails consistently on Android
 fail-if = os == "android"
 # spdy and http2 unit tests require us to have node available to run the spdy and http2 server
 [test_spdy.js]
 run-if = hasNode
+run-sequentially = node server exceptions dont replay well
 [test_http2.js]
 run-if = hasNode
+run-sequentially = node server exceptions dont replay well
 [test_speculative_connect.js]
 [test_standardurl.js]
 [test_standardurl_port.js]
 [test_streamcopier.js]
 [test_traceable_channel.js]
 [test_unescapestring.js]
 [test_xmlhttprequest.js]
 [test_XHR_redirects.js]