diff --git a/profiles/templates/3.5/6_ac_update_sync/world/grp/dev-lang b/profiles/templates/3.5/6_ac_update_sync/world/grp/dev-lang
index 23406c19..1c49b853 100644
--- a/profiles/templates/3.5/6_ac_update_sync/world/grp/dev-lang
+++ b/profiles/templates/3.5/6_ac_update_sync/world/grp/dev-lang
@@ -20,7 +20,7 @@ dev-lang/lazarus
 dev-lang/lua
 dev-lang/luajit
 dev-lang/mercury
-dev-lang/mercury-extras
+#dev-lang/mercury-extras
 dev-lang/mmix
 dev-lang/mono
 #dev-lang/mono-basic