diff --git a/games/backgammon/backgammon/main.c b/games/backgammon/backgammon/main.c
index a08b29cbb026..0aab499d3d57 100644
--- a/games/backgammon/backgammon/main.c
+++ b/games/backgammon/backgammon/main.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: main.c,v 1.14 1999/09/09 17:30:17 jsm Exp $	*/
+/*	$NetBSD: main.c,v 1.15 1999/09/17 17:07:11 jsm Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -43,7 +43,7 @@ __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
 #if 0
 static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: main.c,v 1.14 1999/09/09 17:30:17 jsm Exp $");
+__RCSID("$NetBSD: main.c,v 1.15 1999/09/17 17:07:11 jsm Exp $");
 #endif
 #endif				/* not lint */
 
@@ -120,7 +120,7 @@ main(argc, argv)
 	/* use whole screen for text */
 	if (tflag)
 		begscr = 0;
-	t = time(0);
+	t = time(NULL);
 	srandom(t);		/* 'random' seed */
 
 #ifdef V7
diff --git a/games/boggle/boggle/bog.c b/games/boggle/boggle/bog.c
index 6c3b92e2fae0..b4abde3bf333 100644
--- a/games/boggle/boggle/bog.c
+++ b/games/boggle/boggle/bog.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: bog.c,v 1.12 1999/09/08 21:17:44 jsm Exp $	*/
+/*	$NetBSD: bog.c,v 1.13 1999/09/17 17:07:11 jsm Exp $	*/
 
 /*-
  * Copyright (c) 1993
@@ -46,7 +46,7 @@ __COPYRIGHT("@(#) Copyright (c) 1993\n\
 #if 0
 static char sccsid[] = "@(#)bog.c	8.2 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: bog.c,v 1.12 1999/09/08 21:17:44 jsm Exp $");
+__RCSID("$NetBSD: bog.c,v 1.13 1999/09/17 17:07:11 jsm Exp $");
 #endif
 #endif /* not lint */
 
@@ -604,7 +604,7 @@ checkdict()
 		}
 		mword[nmwords++] = mwordsp;
 		p = w;
-		while ((*mwordsp++ = *p++) != NULL)
+		while ((*mwordsp++ = *p++) != '\0')
 		    	;
 	}
 }
diff --git a/games/quiz/quiz.c b/games/quiz/quiz.c
index aec0ae788251..18b0f49d6f77 100644
--- a/games/quiz/quiz.c
+++ b/games/quiz/quiz.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: quiz.c,v 1.15 1999/09/12 09:02:22 jsm Exp $	*/
+/*	$NetBSD: quiz.c,v 1.16 1999/09/17 17:07:11 jsm Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993
@@ -47,7 +47,7 @@ __COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\
 #if 0
 static char sccsid[] = "@(#)quiz.c	8.3 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: quiz.c,v 1.15 1999/09/12 09:02:22 jsm Exp $");
+__RCSID("$NetBSD: quiz.c,v 1.16 1999/09/17 17:07:11 jsm Exp $");
 #endif
 #endif /* not lint */
 
@@ -342,7 +342,7 @@ appdstr(s, tp, len)
 
 	if ((m = malloc(strlen(s) + len + 1)) == NULL)
 		errx(1, "malloc");
-	for (mp = m, sp = s; (*mp++ = *sp++) != NULL; )
+	for (mp = m, sp = s; (*mp++ = *sp++) != '\0'; )
 		;
 	--mp;
 	if (*(mp - 1) == '\\')
diff --git a/games/sail/game.c b/games/sail/game.c
index 645c6a4d1d33..1b524dc57eaf 100644
--- a/games/sail/game.c
+++ b/games/sail/game.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: game.c,v 1.5 1997/10/13 19:44:09 christos Exp $	*/
+/*	$NetBSD: game.c,v 1.6 1999/09/17 17:07:11 jsm Exp $	*/
 
 /*
  * Copyright (c) 1983, 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)game.c	8.2 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: game.c,v 1.5 1997/10/13 19:44:09 christos Exp $");
+__RCSID("$NetBSD: game.c,v 1.6 1999/09/17 17:07:11 jsm Exp $");
 #endif
 #endif /* not lint */
 
@@ -52,7 +52,8 @@ char *af;
 	int turns;
 
 	turns = ship->specs->ta;
-	if ((*af = (ship->file->drift > 1 && turns)) != NULL) {
+	*af = (ship->file->drift > 1 && turns);
+	if (*af != '\0') {
 		turns--;
 		if (ship->file->FS == 1)
 			turns = 0;