Index: gerber.c
===================================================================
--- gerber.c	(revision 34297)
+++ gerber.c	(revision 34298)
@@ -197,7 +197,7 @@
 
 static void gerber_warning(rnd_hid_export_opt_func_action_t act, void *call_ctx, rnd_export_opt_t *opt);
 
-static rnd_export_opt_t gerber_options[] = {
+static const rnd_export_opt_t gerber_options[] = {
 	{"", "WARNING",
 	 RND_HATT_BEGIN_VBOX, 0, 0, {0, 0, 0, 0, {0}, gerber_warning}, 0, 0},
 #define HA_warning 0