--- ipset-6.6/configure.ac~	2011-05-24 10:28:55.000000000 +0200
+++ ipset-6.6/configure.ac	2011-05-26 14:03:37.703069144 +0200
@@ -44,7 +44,7 @@
 	AC_MSG_ERROR([Invalid kernel source directory $ksourcedir])
 fi
 
-if test ! -e "$kbuilddir/.config"
+if test ! -e "$kbuilddir/config-dist"
 then
 	AC_MSG_ERROR([The kernel build directory $kbuilddir is not configured])
 fi