--- a/symbian4/single/sysdefs/system_model.xml	Fri Apr 23 11:49:49 2010 +0100
+++ b/symbian4/single/sysdefs/system_model.xml	Fri Apr 23 12:11:59 2010 +0100
@@ -6044,7 +6044,7 @@
 <collection name="hb_info" long-name="Orbit Info" level="api">
 <component name="hb_build" long-name="Orbit Build" introduced="^4">
 <!-- should break this down into actual components -->
-<unit bldFile="mw/hb" proFile="hb.pro"/>
+<unit bldFile="mw/hb" proFile="hb.pro" qmakeArgs="-r MMP_RULES+=EXPORTUNFROZEN"/>
 </component>
 </collection>
 <collection name="hb_test" long-name="Orbit Test" level="test">