diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index 005e1525ab86..299b4121f914 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -137,8 +137,6 @@ extern struct ctl_table ether_table[];
 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
 
 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
-#define MAC_BUF_SIZE	18
-#define DECLARE_MAC_BUF(var) char var[MAC_BUF_SIZE]
 
 #endif