--- configure.b	2013-01-29 10:27:10.000000000 -0800
+++ configure	2013-02-04 10:42:55.000000000 -0800
@@ -26489,8 +26489,9 @@
 	  CPPFLAGS="$CPPFLAGS -I$krb5_dir/include"
 	  ac_heimdal_version=`grep heimdal $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*heimdal.*$/HEIMDAL/'`
 	  # MIT Kerberos moved krb5.h to krb5/krb5.h starting with release 1.5
-	  ac_mit_version_olddir=`grep 'Massachusetts Institute of Technology' $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*Massachusetts Institute of Technology.*$/MIT/'`
-	  ac_mit_version_newdir=`grep 'Massachusetts Institute of Technology' $krb5_dir/include/krb5/krb5.h | head -n 1 | sed 's/^.*Massachusetts Institute of Technology.*$/MIT/'`
+
+	  ac_mit_version_olddir=`head -20 "$krb5_dir/include/krb5.h" | perl -e 'while (<>) {$line = $_; chomp $line; $allLines .= " $line";} if ($allLines =~ /Massachusetts.*Institute of Technology/s) {print "MIT";}'`
+	  ac_mit_version_newdir=`head -20 "$krb5_dir/include/krb5/krb5.h" | perl -e 'while (<>) {$line = $_; chomp $line; $allLines .= " $line";} if ($allLines =~ /Massachusetts.*Institute of Technology/s) {print "MIT";}'`
 	  ac_krb5_version="$ac_heimdal_version$ac_mit_version_olddir$ac_mit_version_newdir"
 	  if test "x$ac_krb5_version" = "xHEIMDAL"
 	  then