--- hatari/src/includes/cfgopts.h	2019/04/01 07:11:28	1.1.1.2
+++ hatari/src/includes/cfgopts.h	2019/04/09 08:56:51	1.1.1.5
@@ -16,17 +16,18 @@ typedef enum
   Float_Tag,
   Double_Tag,
   String_Tag,
+  Key_Tag
 } TAG_TYPE;
 
 
 struct Config_Tag
 {
-  char       *code;                /* Option switch        */
+  const char *code;                /* Option switch        */
   TAG_TYPE   type;                 /* Type of option       */
   void       *buf;                 /* Storage location     */
 };
 
-int input_config(const char *, struct Config_Tag *, char *);
-int update_config(const char *, struct Config_Tag *, char *);
+int input_config(const char *, const struct Config_Tag *, const char *);
+int update_config(const char *, const struct Config_Tag *, const char *);
 
 #endif