--- xevil-2.02r2.orig/x11/gen_xpm/world/background_13.xpm
+++ xevil-2.02r2/x11/gen_xpm/world/background_13.xpm
@@ -1,5 +1,5 @@
 /* XPM */
-static char *background_13[] = {
+static const char *background_13[] = {
   /* width height ncolors chars_per_pixel */
   "128 128 11 1 0 0",
   /* colors */