--- rpm-5.4.13/configure.ac~	2013-08-26 21:59:50.601111413 +0200
+++ rpm-5.4.13/configure.ac	2013-08-26 21:59:51.917134583 +0200
@@ -2255,7 +2255,7 @@ unknown|pc|ibm|redhat|pld|mandriva|conec
 	test -f /usr/bin/crux &&		RPMCANONVENDOR=crux
 	test -f /etc/ark-release &&		RPMCANONVENDOR=ark
 	test -f /etc/openmamba-release &&	RPMCANONVENDOR=openmamba
-	test -r /etc/os-release &&. /etc/os-release && [ -n "$ID" ] && RPMCANONVENDOR="$ID"
+	test -r /etc/os-release && ID=$(. /etc/os-release && [ -n "$ID" ] && echo "$ID") && RPMCANONVENDOR="$ID"
 	;;
 esac
 RPMCANONOS="$target_os_noversion"