Index: gerber.c
===================================================================
--- gerber.c	(revision 34300)
+++ gerber.c	(revision 34301)
@@ -260,8 +260,8 @@
 
 static const rnd_export_opt_t *gerber_get_export_options(rnd_hid_t *hid, int *n)
 {
-	char **val = &gerber_values[HA_gerberfile].str;
-	if ((PCB != NULL) && ((val == NULL) || (*val == NULL) || (**val == '\0')))
+	const char *val = gerber_values[HA_gerberfile].str;
+	if ((PCB != NULL) && ((val == NULL) || (*val == '\0')))
 		pcb_derive_default_filename(PCB->hidlib.filename, &gerber_values[HA_gerberfile], "");
 
 	if (n)