diff --git a/UPDATING b/UPDATING
index 84f9e8ac6b3d..8c404c465669 100644
--- a/UPDATING
+++ b/UPDATING
@@ -31,6 +31,16 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW:
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20130425:
+	The mergemaster command now uses the default MAKEOBJDIRPREFIX
+	rather than creating it's own in the temporary directory in
+	order allow access to bootstrapped versions of tools such as
+	install and mtree.  When upgrading from version of FreeBSD where
+	the install command does not support -l, you will need to
+	install a new mergemaster command if mergemaster -p is required.
+	This can be accomplished with the command (cd src/usr.sbin/mergemaster
+	&& make install).
+
 20130404:
 	Legacy ATA stack, disabled and replaced by new CAM-based one since
 	FreeBSD 9.0, completely removed from the sources.  Kernel modules
@@ -1757,7 +1767,7 @@ COMMON ITEMS:
 	step.  It never hurts to do it all the time.  You may need to
 	install a new mergemaster (cd src/usr.sbin/mergemaster && make
 	install) after the buildworld before this step if you last updated
-	from current before 20020224 or from -stable before 20020408.
+	from current before 20130425 or from -stable before 20130430.
 
 	[6] This only deletes old files and directories. Old libraries
 	can be deleted by "make delete-old-libs", but you have to make
diff --git a/usr.sbin/mergemaster/mergemaster.sh b/usr.sbin/mergemaster/mergemaster.sh
index 48b58f3d285e..1838448aa87e 100755
--- a/usr.sbin/mergemaster/mergemaster.sh
+++ b/usr.sbin/mergemaster/mergemaster.sh
@@ -629,11 +629,10 @@ case "${RERUN}" in
         ${MM_MAKE} DESTDIR=${DESTDIR} distrib-dirs >/dev/null
         ;;
       esac
-      od=${TEMPROOT}/usr/obj
       ${MM_MAKE} DESTDIR=${TEMPROOT} distrib-dirs >/dev/null &&
-      MAKEOBJDIRPREFIX=$od ${MM_MAKE} _obj SUBDIR_OVERRIDE=etc >/dev/null &&
-      MAKEOBJDIRPREFIX=$od ${MM_MAKE} everything SUBDIR_OVERRIDE=etc >/dev/null &&
-      MAKEOBJDIRPREFIX=$od ${MM_MAKE} DESTDIR=${TEMPROOT} distribution >/dev/null;} ||
+      ${MM_MAKE} _obj SUBDIR_OVERRIDE=etc >/dev/null &&
+      ${MM_MAKE} everything SUBDIR_OVERRIDE=etc >/dev/null &&
+      ${MM_MAKE} DESTDIR=${TEMPROOT} distribution >/dev/null;} ||
     { echo '';
      echo "  *** FATAL ERROR: Cannot 'cd' to ${SOURCEDIR} and install files to";
       echo "      the temproot environment";