--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,7 @@
 AC_CHECK_HEADER([ncursesw/ncurses.h], [have_ncursesw_ncurses_h=yes])
 AC_CHECK_HEADER([curses.h], [have_curses_h=yes])
 AC_CHECK_LIB([ncursesw], [initscr], [have_libncursesw=yes])
+AC_SEARCH_LIBS([keypad],[tinfow])
 
 AC_MSG_CHECKING([for Unicode-aware ncurses])