--- a/configure.in
+++ b/configure.in
@@ -20,7 +20,7 @@
 ### along with Octave; see the file COPYING.  If not, write to the Free
 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
-AC_REVISION($Revision: 1.224 $)
+AC_REVISION($Revision: 1.225 $)
 AC_PREREQ(2.9)
 AC_INIT(src/octave.cc)
 AC_CONFIG_HEADER(config.h)
@@ -179,13 +179,13 @@
 READLINE_DIR=readline
 USE_READLINE=true
 LIBREADLINE=-lreadline
-AC_ARG_ENABLE(readline,
-  [  --enable-readline       use readline library (default is yes)],
-  [if test "$enableval" = no; then
-     USE_READLINE=false;
-     LIBREADLINE="";
-     READLINE_DIR="";
-   fi], [])
+dnlAC_ARG_ENABLE(readline,
+dnl  [  --enable-readline       use readline library (default is yes)],
+dnl  [if test "$enableval" = no; then
+dnl     USE_READLINE=false;
+dnl     LIBREADLINE="";
+dnl     READLINE_DIR="";
+dnl   fi], [])
 if $USE_READLINE; then
   AC_DEFINE(USE_READLINE, 1)
 fi