diff --git a/etc/etc.hp300/Makefile.inc b/etc/etc.hp300/Makefile.inc
index 5887522c40b3..277ad7bc1bc4 100644
--- a/etc/etc.hp300/Makefile.inc
+++ b/etc/etc.hp300/Makefile.inc
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile.inc,v 1.21 2008/03/18 04:20:37 lukem Exp $
+#	$NetBSD: Makefile.inc,v 1.22 2023/06/02 14:25:35 lukem Exp $
 #
 #	etc.hp300/Makefile.inc -- hp300-specific etc Makefile targets
 #
@@ -14,7 +14,7 @@ INSTALLATION_DIRS+=	installation/miniroot	\
 			installation/misc
 
 snap_md_post:
-.ifndef UPDATE
+.if ${MKUPDATE} == "no"
 	cd ${KERNSRCDIR}/arch/hp300/stand && ${MAKE} cleandir
 .endif
 	cd ${KERNSRCDIR}/arch/hp300/stand && \
diff --git a/etc/etc.sparc64/Makefile.inc b/etc/etc.sparc64/Makefile.inc
index d7607b7b9b5f..da45fc3b02f8 100644
--- a/etc/etc.sparc64/Makefile.inc
+++ b/etc/etc.sparc64/Makefile.inc
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile.inc,v 1.32 2012/01/15 17:36:55 joerg Exp $
+#	$NetBSD: Makefile.inc,v 1.33 2023/06/02 14:25:35 lukem Exp $
 #
 #	etc.sparc64/Makefile.inc -- sparc64-specific etc Makefile targets
 #
@@ -34,7 +34,7 @@ SPARC32=COPTS=-m32 LD="ld -m elf32_sparc" AS="as -32" \
 	(cd ${NETBSDSRCDIR}/${_s64dir} && \
 	    ${SPARC32_ENV} ${MAKE} ${SPARC32} ${_M} obj)
 .endif
-.ifndef UPDATE
+.if ${MKUPDATE} == "no"
 	(cd ${NETBSDSRCDIR}/${_s64dir} && ${MAKE} cleandir
 .endif
 	(cd ${NETBSDSRCDIR}/${_s64dir} && \