--- configure.in.orig	2007-04-12 10:05:07.030483000 +0200
+++ configure.in	2007-04-12 10:05:33.179720000 +0200
@@ -136,7 +136,7 @@
 AC_MSG_CHECKING([for user id of ${rootuser}])
 dnl grab uid of rootuser
 rootuid=`${XCU_ID} -u ${rootuser}`
-if [[ `echo ${rootuid} | ${EGREP} ^[[:digit:]]+$` ]]
+if [[ `echo ${rootuid} | ${EGREP} '^[[:digit:]]+$'` ]]
 then
 	AC_MSG_RESULT([${rootuid}])
 else