--- a/telnet/misc-proto.h	
+++ a/telnet/misc-proto.h	
@@ -63,7 +63,7 @@ 
 #ifndef	__MISC_PROTO__
 #define	__MISC_PROTO__
 
-#include <sys/cdefs.h>
+#define	__P(protos) protos /* full-blown ANSI C */
 
 void auth_encrypt_init __P((char *, char *, char *, int));
 void auth_encrypt_user __P((char *));
--- a/telnet/ring.h	
+++ a/telnet/ring.h	
@@ -28,8 +28,8 @@ 
  *
  */
 
-#include <sys/cdefs.h>
 #include <sys/types.h>
+#define	__P(protos) protos /* full-blown ANSI C */
 #define P __P
 
 /*
--- a/telnetd/sys_term.c	
+++ a/telnetd/sys_term.c	
@@ -838,8 +838,10 @@ cleanup (int sig)
    * receive another signal while we're in that function. */
   sigfillset(&sigset);
   sigprocmask(SIG_SETMASK, &sigset, &sigset);
+#if defined(logwtmp)
   if (logout (p))
     logwtmp (p, "", "");
+#endif
   sigprocmask(SIG_SETMASK, &sigset, NULL);
 #ifdef PARANOID_TTYS
   /*