Fix configure.ac warning

diff --git a/configure.ac b/configure.ac
index 05432d4..d32c30b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@ dnl ---------------------
 dnl define a macro or two
 dnl ---------------------
 
-AC_DEFUN(NMH_PROG_GNU_LIBTOOL, [
+AC_DEFUN([NMH_PROG_GNU_LIBTOOL], [
 if test -n "$LIBTOOL" ; then
   tmptest=`$LIBTOOL --version 2>&1 | grep GNU`
   if test x"$tmptest" != x  ; then