diff --git a/src/openvpn/socket.c b/src/openvpn/socket.c
index bd7a449..a0c22b1 100644
--- a/src/openvpn/socket.c
+++ b/src/openvpn/socket.c
@@ -3036,10 +3036,6 @@
     return BSTR(&buffer);
 }
 
-#ifndef UINT8_MAX
-#define UINT8_MAX 0xff
-#endif
-
 /* add some offset to an ipv6 address
  * (add in steps of 8 bits, taking overflow into next round)
  */