diff --git a/configure.ac b/configure.ac
index e3f5626..ed369d1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -285,7 +285,7 @@ PKG_CHECK_MODULES([TINFO], [tinfo],
         AC_SUBST([TINFO_LIBS], ["$TINFO_LDFLAGS -ltinfo"])],)])])
 
 # Then try to find it in a specific install dir
-AC_ARG_WITH(curses, AC_HELP_STRING([--with-curses=DIR], [Where curses is installed]),
+AC_ARG_WITH(curses, [AC_HELP_STRING([--with-curses=DIR], [Where curses is installed])],
     [if test $withval != yes; then
         cv_curses=$withval
     fi