diff --git a/build/moz.configure/old.configure b/build/moz.configure/old.configure
index 55a001c67d..0c2be9b553 100644
--- a/build/moz.configure/old.configure
+++ b/build/moz.configure/old.configure
@@ -289,10 +289,7 @@ def old_configure_options(*options):
     '--with-soft-float',
     '--with-system-bz2',
     '--with-system-jpeg',
-    '--with-system-libevent',
     '--with-system-libvpx',
-    '--with-system-nspr',
-    '--with-system-nss',
     '--with-system-zlib',
     '--with-thumb',
     '--with-thumb-interwork',