-#define AO_ROMCONFIG_VERSION (ao_symbols[0].addr)
-#define AO_ROMCONFIG_CHECK (ao_symbols[1].addr)
-#define AO_SERIAL_NUMBER (ao_symbols[2].addr)
-#define AO_RADIO_CAL (ao_symbols[3].addr)
-#define AO_USB_DESCRIPTORS (ao_symbols[4].addr)
+#define AO_ROMCONFIG_VERSION_INDEX 0
+#define AO_ROMCONFIG_CHECK_INDEX 1
+#define AO_SERIAL_NUMBER_INDEX 2
+#define AO_RADIO_CAL_INDEX 3
+#define AO_USB_DESCRIPTORS_INDEX 4
+
+#define AO_ROMCONFIG_VERSION (ao_symbols[AO_ROMCONFIG_VERSION_INDEX].addr)
+#define AO_ROMCONFIG_CHECK (ao_symbols[AO_ROMCONFIG_CHECK_INDEX].addr)
+#define AO_SERIAL_NUMBER (ao_symbols[AO_SERIAL_NUMBER_INDEX].addr)
+#define AO_RADIO_CAL (ao_symbols[AO_RADIO_CAL_INDEX].addr)
+#define AO_USB_DESCRIPTORS (ao_symbols[AO_USB_DESCRIPTORS_INDEX].addr)