/* Note that the GTK port uses gdk to display the icon, so Emacs need
not have XPM support compiled in. */
#if (defined (HAVE_XPM) && defined (HAVE_X_WINDOWS)) || defined (USE_GTK)
-static char * gnu_xpm_bits[] = {
+static const char * gnu_xpm_bits[] = {
/* width height ncolors chars_per_pixel */
"32 32 255 2",
/* colors */