diff --git a/m4/curses.m4 b/m4/curses.m4
index 82b110fe..41c0e6c8 100644
--- a/m4/curses.m4
+++ b/m4/curses.m4
@@ -131,7 +131,7 @@ AC_DEFUN([AC_CHECK_CURSES],[
 	  if test x$withval = xno ; then
 		search_ncurses=false
 	  elif test x$withval != xyes ; then
-		AC_NCURSES($withval/include, ncurses.h, -L$withval/lib -lncurses, -I$withval/include, "ncurses on $withval/include")
+		AC_NCURSES($withval/include, ncurses.h, -L$withval/lib -lncurses, -I$withval/include, [ncurses on $withval/include])
 	  fi
 	)