diff --git a/mozilla/calendar/sunbird/config/mozconfig b/mozilla/calendar/sunbird/config/mozconfig
index f6b6b818a5b..94d1ec861db 100644
--- a/mozilla/calendar/sunbird/config/mozconfig
+++ b/mozilla/calendar/sunbird/config/mozconfig
@@ -1,14 +1,12 @@
 ac_add_options --enable-calendar
 ac_add_options --enable-crypto
-ac_add_options --enable-extensions=cookie,pref
-ac_add_options --enable-optimize=-O2
+ac_add_options --enable-extensions=pref
 ac_add_options --enable-plaintext-editor-only
-ac_add_options --enable-static
+ac_add_options --enable-necko-protocols=about,http,file,jar,res
 ac_add_options --disable-accessibility
 ac_add_options --disable-activex
 ac_add_options --disable-activex-scripting
 ac_add_options --disable-composer
-ac_add_options --disable-debug
 ac_add_options --disable-installer
 ac_add_options --disable-jsd
 ac_add_options --disable-ldap
@@ -19,8 +17,6 @@ ac_add_options --disable-necko-disk-cache
 ac_add_options --disable-oji
 ac_add_options --disable-profilesharing
 ac_add_options --disable-view-source
-ac_add_options --disable-shared
-ac_add_options --disable-tests
   
 export MOZ_SUNBIRD=1
 mk_add_options MOZ_SUNBIRD=1