diff --git a/libfwgrubconfig/libfwgrubconfig.c b/libfwgrubconfig/libfwgrubconfig.c
index 89235ea..78980e9 100644
--- a/libfwgrubconfig/libfwgrubconfig.c
+++ b/libfwgrubconfig/libfwgrubconfig.c
@@ -625,7 +625,12 @@ void fwgrub_create_menu(FILE *fp)
 	fprintf(fp, "default=0\ntimeout=5\n");
 	snprintf(path, PATH_MAX, "%s/grub/message", entry.bootstr);
 	if(is_raid1_device(entry.rootdev))
-		*(entry.grubbootdev) = '\0';
+	{
+		if (entry.grubbootdev)
+			*(entry.grubbootdev) = '\0';
+		else
+			entry.grubbootdev = strdup("");
+	}
 	if(!stat(path, &buf))
 		fprintf(fp, "gfxmenu %s%s/grub/message\n\n", entry.grubbootdev, entry.bootstr);
 	entry.kernel = strdup("/vmlinuz");