diff --git a/private/mls b/private/mls
index 593b316..0e0995c 100644
--- a/private/mls
+++ b/private/mls
@@ -74,7 +74,8 @@
 # Read operations: Subject must dominate object unless the subject
 # or the object is trusted.
 mlsconstrain dir { read getattr search }
-	     (t2 == app_data_file_type or l1 dom l2 or t1 == mlstrustedsubject or t2 == mlstrustedobject);
+	     (t2 == app_data_file_type or l1 dom l2 or t1 == mlstrustedsubject or t2 == mlstrustedobject
+	     or (t1 == mlsvendorcompat and (t2 == system_data_file or t2 == user_profile_data_file) ) );
 
 mlsconstrain { file lnk_file sock_file chr_file blk_file } { read getattr execute }
 	     (t2 == app_data_file_type or t2 == appdomain_tmpfs or l1 dom l2 or t1 == mlstrustedsubject or t2 == mlstrustedobject);