diff --git a/board/esd/cpci405/cpci405.c b/board/esd/cpci405/cpci405.c
index 005871c..fb34957 100644
--- a/board/esd/cpci405/cpci405.c
+++ b/board/esd/cpci405/cpci405.c
@@ -691,7 +691,7 @@
 	);
 
 #define CFG_I2C_EEPROM_ADDR_2	0x51	/* EEPROM CAT28WC32		*/
-#define CFG_ENV_SIZE_2	0x800	/* 2048 bytes may be used for env vars*/
+#define CONFIG_ENV_SIZE_2	0x800	/* 2048 bytes may be used for env vars*/
 
 /*
  * Write backplane ip-address...
@@ -705,11 +705,11 @@
 	char *ptr;
 	IPaddr_t ipaddr;
 
-	buf = malloc(CFG_ENV_SIZE_2);
-	if (eeprom_read(CFG_I2C_EEPROM_ADDR_2, 0, (uchar *)buf, CFG_ENV_SIZE_2)) {
+	buf = malloc(CONFIG_ENV_SIZE_2);
+	if (eeprom_read(CFG_I2C_EEPROM_ADDR_2, 0, (uchar *)buf, CONFIG_ENV_SIZE_2)) {
 		puts("\nError reading backplane EEPROM!\n");
 	} else {
-		crc = crc32(0, (uchar *)(buf+4), CFG_ENV_SIZE_2-4);
+		crc = crc32(0, (uchar *)(buf+4), CONFIG_ENV_SIZE_2-4);
 		if (crc != *(ulong *)buf) {
 			printf("ERROR: crc mismatch %08lx %08lx\n", crc, *(ulong *)buf);
 			return -1;
@@ -764,14 +764,14 @@
 	}
 
 	printf("Setting bp_ip to %s\n", argv[1]);
-	buf = malloc(CFG_ENV_SIZE_2);
-	memset(buf, 0, CFG_ENV_SIZE_2);
+	buf = malloc(CONFIG_ENV_SIZE_2);
+	memset(buf, 0, CONFIG_ENV_SIZE_2);
 	sprintf(str, "bp_ip=%s", argv[1]);
 	strcpy(buf+4, str);
-	crc = crc32(0, (uchar *)(buf+4), CFG_ENV_SIZE_2-4);
+	crc = crc32(0, (uchar *)(buf+4), CONFIG_ENV_SIZE_2-4);
 	*(ulong *)buf = crc;
 
-	if (eeprom_write(CFG_I2C_EEPROM_ADDR_2, 0, (uchar *)buf, CFG_ENV_SIZE_2)) {
+	if (eeprom_write(CFG_I2C_EEPROM_ADDR_2, 0, (uchar *)buf, CONFIG_ENV_SIZE_2)) {
 		puts("\nError writing backplane EEPROM!\n");
 	}