diff --git a/board/siemens/SCM/flash.c b/board/siemens/SCM/flash.c
index 815f023..500af92 100644
--- a/board/siemens/SCM/flash.c
+++ b/board/siemens/SCM/flash.c
@@ -207,13 +207,13 @@
 		       CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]);
 #endif
 
-#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR)
-# ifndef  CFG_ENV_SIZE
-#  define CFG_ENV_SIZE	CFG_ENV_SECT_SIZE
+#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
+# ifndef  CONFIG_ENV_SIZE
+#  define CONFIG_ENV_SIZE	CONFIG_ENV_SECT_SIZE
 # endif
 	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]);
 #endif
 
 	return (size_b0);