diff --git a/cf/telnet.m4 b/cf/telnet.m4
index 637c66f44..0e13a6218 100644
--- a/cf/telnet.m4
+++ b/cf/telnet.m4
@@ -56,11 +56,6 @@ case "$host" in
 	;;
 esac
 
-AH_BOTTOM([
-#if defined(ENCRYPTION) && !defined(AUTHENTICATION)
-#define AUTHENTICATION 1
-#endif
-
 /* Set this to the default system lead string for telnetd 
  * can contain %-escapes: %s=sysname, %m=machine, %r=os-release
  * %v=os-version, %t=tty, %h=hostname, %d=date and time