diff --git a/include/arpa/inet.h b/include/arpa/inet.h
index 5295dee6dd..86ea2159f9 100644
--- a/include/arpa/inet.h
+++ b/include/arpa/inet.h
@@ -49,13 +49,6 @@
 /****************************************************************************
  * Public Type Definitions
  ****************************************************************************/
-/*  Length of the string form for IP address (excludes NULL termination) */
-
-#define INET_ADDRSTRLEN 16
-
-/*  Length of the string form for IPv6 address (excludes NULL termination) */
-
-#define INET6_ADDRSTRLEN 46
 
 /* This macro to convert a 16/32-bit constant values quantity from host byte
  * order to network byte order.  The 16-bit version of this macro is required