diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index f078001..9bd5499 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -391,7 +391,8 @@
             items = flagval.split(",")
             num = len(items)
             if num > 4:
-                bb.error("Only enable,disable,depend,rdepend can be specified!")
+                bb.error("%s: PACKAGECONFIG[%s] Only enable,disable,depend,rdepend can be specified!"
+                    % (d.getVar('PN', True), flag))
 
             if flag in pkgconfig:
                 if num >= 3 and items[2]:
@@ -512,7 +513,8 @@
                 if unskipped_pkgs:
                     for pkg in skipped_pkgs:
                         bb.debug(1, "SKIPPING the package " + pkg + " at do_rootfs because it's " + recipe_license)
-                        d.setVar('LICENSE_EXCLUSION-' + pkg, 1)
+                        mlprefix = d.getVar('MLPREFIX', True)
+                        d.setVar('LICENSE_EXCLUSION-' + mlprefix + pkg, 1)
                     for pkg in unskipped_pkgs:
                         bb.debug(1, "INCLUDING the package " + pkg)
                 elif all_skipped or incompatible_license(d, bad_licenses):