diff --git a/board/mp2usb/flash.c b/board/mp2usb/flash.c
index c19d445..527e74e 100644
--- a/board/mp2usb/flash.c
+++ b/board/mp2usb/flash.c
@@ -98,8 +98,8 @@
 			&flash_info[0] );
 
 	flash_protect ( FLAG_PROTECT_SET,
-			CFG_ENV_ADDR,
-			CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0] );
+			CONFIG_ENV_ADDR,
+			CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0] );
 
 	return size;
 }