diff --git a/include/configs/cm_fx6.h b/include/configs/cm_fx6.h
index 10d02b4e18c9b843387dacec2c3eba1b332e7eb7..7cf241e31d7725b826671d8f70c0b4df3ac119ef 100644
--- a/include/configs/cm_fx6.h
+++ b/include/configs/cm_fx6.h
@@ -222,7 +222,6 @@
 #define CONFIG_MII
 #define CONFIG_ETHPRIME			"FEC0"
 #define CONFIG_ARP_TIMEOUT		200UL
-#define CONFIG_NETMASK			255.255.255.0
 #define CONFIG_NET_RETRY_COUNT		5
 
 /* USB */