diff --git a/board/cerf250/flash.c b/board/cerf250/flash.c
index ba82892..3ff19bc 100644
--- a/board/cerf250/flash.c
+++ b/board/cerf250/flash.c
@@ -90,8 +90,8 @@
 			&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;
 }