diff --git a/bin/sync/Makefile b/bin/sync/Makefile
index 72c664f4afdd..15f7abec64ea 100644
--- a/bin/sync/Makefile
+++ b/bin/sync/Makefile
@@ -4,4 +4,6 @@
 PROG=	sync
 MAN=	sync.8
 
+WARNS=	2
+
 .include <bsd.prog.mk>
diff --git a/bin/sync/sync.c b/bin/sync/sync.c
index 6fe316022702..2a3b5181849e 100644
--- a/bin/sync/sync.c
+++ b/bin/sync/sync.c
@@ -47,6 +47,8 @@ static const char rcsid[] =
 
 #include <unistd.h>
 
+int main __P((void));
+
 int
 main()
 {
diff --git a/games/adventure/Makefile b/games/adventure/Makefile
index f1a912addb65..a6404e799e45 100644
--- a/games/adventure/Makefile
+++ b/games/adventure/Makefile
@@ -8,6 +8,8 @@ CFLAGS+=-traditional-cpp
 HIDEGAME=hidegame
 CLEANFILES=data.c setup setup.o
 
+WARNS=	2
+
 build-tools: setup
 
 data.c: glorkz setup
diff --git a/games/adventure/io.c b/games/adventure/io.c
index ef76088141d4..92c27dc50e33 100644
--- a/games/adventure/io.c
+++ b/games/adventure/io.c
@@ -533,7 +533,7 @@ int skip;       /* assumes object 1 doesn't have prop 1, obj 2 no prop 2 &c*/
 	msg = &ptext[m];
 	if ((tbuf=(char *) malloc(msg->txtlen + 1)) == 0)
 		errx(1, "Out of memory!");
-	memcpy(tbuf, msg->seekadr, (u_int)msg->txtlen + 1);   /* Room to null */
+	memcpy(tbuf, msg->seekadr, (size_t)msg->txtlen + 1);   /* Room to null */
 	s = tbuf;
 
 	nonfirst=0;
diff --git a/games/adventure/vocab.c b/games/adventure/vocab.c
index 318de184596e..7db00eeeecd2 100644
--- a/games/adventure/vocab.c
+++ b/games/adventure/vocab.c
@@ -48,6 +48,7 @@ static const char rcsid[] =
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <err.h>
 #include "hdr.h"