diff --git a/usr.sbin/ppp/log.h b/usr.sbin/ppp/log.h
index 6e13039f30e4..e34d8cabb1f2 100644
--- a/usr.sbin/ppp/log.h
+++ b/usr.sbin/ppp/log.h
@@ -64,7 +64,6 @@ struct datalink;
 
 /* The first int arg for all of the following is one of the above values */
 extern const char *log_Name(int);
-extern int log_Id(const char *);
 extern void log_Keep(int);
 extern void log_KeepLocal(int, u_long *);
 extern void log_Discard(int);