-#define WACS_BSSB (&_nc_wacs['l'])
-#define WACS_SSBB (&_nc_wacs['m'])
-#define WACS_BBSS (&_nc_wacs['k'])
-#define WACS_SBBS (&_nc_wacs['j'])
-#define WACS_SBSS (&_nc_wacs['u'])
-#define WACS_SSSB (&_nc_wacs['t'])
-#define WACS_SSBS (&_nc_wacs['v'])
-#define WACS_BSSS (&_nc_wacs['w'])
-#define WACS_BSBS (&_nc_wacs['q'])
-#define WACS_SBSB (&_nc_wacs['x'])
-#define WACS_SSSS (&_nc_wacs['n'])
+#define NCURSES_WACS(c) (&_nc_wacs[(unsigned char)c])
+
+#define WACS_BSSB NCURSES_WACS('l')
+#define WACS_SSBB NCURSES_WACS('m')
+#define WACS_BBSS NCURSES_WACS('k')
+#define WACS_SBBS NCURSES_WACS('j')
+#define WACS_SBSS NCURSES_WACS('u')
+#define WACS_SSSB NCURSES_WACS('t')
+#define WACS_SSBS NCURSES_WACS('v')
+#define WACS_BSSS NCURSES_WACS('w')
+#define WACS_BSBS NCURSES_WACS('q')
+#define WACS_SBSB NCURSES_WACS('x')
+#define WACS_SSSS NCURSES_WACS('n')