diff --git a/esp-link/config.h b/esp-link/config.h
index c1c1f68..6cbff12 100644
--- a/esp-link/config.h
+++ b/esp-link/config.h
@@ -47,6 +47,7 @@ typedef struct {
            telnet_port2mode;
 } FlashConfig;
 extern FlashConfig flashConfig;
+extern FlashConfig flashDefault;
 
 bool configSave(void);
 bool configRestore(void);