diff --git a/projects/sample/autoconf/AutoRegen.sh b/projects/sample/autoconf/AutoRegen.sh
index 7c04715cdf4..126703ba5aa 100755
--- a/projects/sample/autoconf/AutoRegen.sh
+++ b/projects/sample/autoconf/AutoRegen.sh
@@ -5,9 +5,9 @@ die () {
 }
 test -d autoconf && test -f autoconf/configure.ac && cd autoconf
 test -f configure.ac || die "Can't find 'autoconf' dir; please cd into it first"
-autoconf --version | egrep '2\.5[0-9]' > /dev/null
+autoconf --version | egrep '2\.[56][0-9]' > /dev/null
 if test $? -ne 0 ; then
-  die "Your autoconf was not detected as being 2.5x"
+  die "Your autoconf was not detected as being 2.5x or 2.6x"
 fi
 cwd=`pwd`
 if test -d ../../../autoconf/m4 ; then
@@ -46,7 +46,7 @@ sed -e "s#^LLVM_SRC_ROOT=.*#LLVM_SRC_ROOT=\"$llvm_src_root\"#" \
 echo "Regenerating aclocal.m4 with aclocal"
 rm -f aclocal.m4
 aclocal -I $llvm_m4 -I "$llvm_m4/.." || die "aclocal failed"
-echo "Regenerating configure with autoconf 2.5x"
+echo "Regenerating configure with autoconf"
 autoconf --warnings=all -o ../configure configure.ac || die "autoconf failed"
 cd ..
 exit 0