diff --git a/sys/conf/kern.post.mk b/sys/conf/kern.post.mk
index 95cb32b..27df428 100644
--- a/sys/conf/kern.post.mk
+++ b/sys/conf/kern.post.mk
@@ -246,6 +246,12 @@ modules-install: kernel-installable
 		done;						\
 	fi
 .  endif
+	set -- ${DESTDIR}${DESTKERNDIR}/*.img;			\
+	if [ -f "$$1" ]; then					\
+		for file; do					\
+		cp -p $$file ${DESTDIR}${DESTKERNDIR}.old;	\
+		done; 						\
+	fi
 .endif
 .if exists(${DESTDIR}/${OLDMODULESDIR})
 	rm -rf ${DESTDIR}/${OLDMODULESDIR} # remove deprecated