diff --git a/sbin/dump/itime.c b/sbin/dump/itime.c
index c875013ec997..dd273ea71685 100644
--- a/sbin/dump/itime.c
+++ b/sbin/dump/itime.c
@@ -52,6 +52,7 @@ static const char rcsid[] =
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <timeconv.h>
 
 #include "dump.h"
 
diff --git a/sbin/dump/main.c b/sbin/dump/main.c
index 270ea81dff58..b18fc7c202d0 100644
--- a/sbin/dump/main.c
+++ b/sbin/dump/main.c
@@ -59,10 +59,12 @@ static const char rcsid[] =
 #include <err.h>
 #include <fcntl.h>
 #include <fstab.h>
+#include <inttypes.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <timeconv.h>
 #include <unistd.h>
 
 #include "dump.h"
@@ -102,7 +104,6 @@ main(int argc, char *argv[])
 	int just_estimate = 0;
 	ino_t maxino;
 	char *tmsg;
-	time_t t;
 
 	spcl.c_date = _time_to_time64(time(NULL));
 
@@ -359,7 +360,7 @@ main(int argc, char *argv[])
 	dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 	dev_bshift = ffs(dev_bsize) - 1;
 	if (dev_bsize != (1 << dev_bshift))
-		quit("dev_bsize (%d) is not a power of 2", dev_bsize);
+		quit("dev_bsize (%ld) is not a power of 2", dev_bsize);
 	tp_bshift = ffs(TP_BSIZE) - 1;
 	if (TP_BSIZE != (1 << tp_bshift))
 		quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
@@ -492,19 +493,19 @@ main(int argc, char *argv[])
 	for (i = 0; i < ntrec; i++)
 		writeheader(maxino - 1);
 	if (pipeout)
-		msg("DUMP: %qd tape blocks\n", spcl.c_tapea);
+		msg("DUMP: %jd tape blocks\n", (intmax_t)spcl.c_tapea);
 	else
-		msg("DUMP: %qd tape blocks on %d volume%s\n",
-		    spcl.c_tapea, spcl.c_volume,
+		msg("DUMP: %jd tape blocks on %d volume%s\n",
+		    (intmax_t)spcl.c_tapea, spcl.c_volume,
 		    (spcl.c_volume == 1) ? "" : "s");
 
 	/* report dump performance, avoid division through zero */
 	if (tend_writing - tstart_writing == 0)
 		msg("finished in less than a second\n");
 	else
-		msg("finished in %d seconds, throughput %qd KBytes/sec\n",
-		    tend_writing - tstart_writing,
-		    spcl.c_tapea / (tend_writing - tstart_writing));
+		msg("finished in %d seconds, throughput %jd KBytes/sec\n",
+		    tend_writing - tstart_writing, (intmax_t)(spcl.c_tapea /
+		    (tend_writing - tstart_writing)));
 
 	putdumptime();
 	trewind();
diff --git a/sbin/dump/tape.c b/sbin/dump/tape.c
index 1665e760a8e9..aa65b47c0148 100644
--- a/sbin/dump/tape.c
+++ b/sbin/dump/tape.c
@@ -781,6 +781,7 @@ doslave(int cmd, int slave_number)
 		eot_count = 0;
 		size = 0;
 
+		wrote = 0;
 		while (eot_count < 10 && size < writesize) {
 #ifdef RDUMP
 			if (host)
diff --git a/sbin/dump/traverse.c b/sbin/dump/traverse.c
index 5480663f320e..bd01ecb36047 100644
--- a/sbin/dump/traverse.c
+++ b/sbin/dump/traverse.c
@@ -49,11 +49,13 @@ static const char rcsid[] =
 #include <protocols/dumprestore.h>
 
 #include <ctype.h>
-#include <stdio.h>
 #include <errno.h>
-#include <string.h>
-#include <unistd.h>
+#include <inttypes.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <timeconv.h>
+#include <unistd.h>
 
 #include "dump.h"
 
@@ -388,8 +390,6 @@ searchdir(
 void
 dumpino(union dinode *dp, ino_t ino)
 {
-	struct ufs1_dinode *dp1;
-	struct ufs2_dinode *dp2;
 	int ind_level, cnt;
 	off_t size;
 	char buf[TP_BSIZE];
@@ -705,11 +705,11 @@ bread(ufs2_daddr_t blkno, char *buf, int size)
 		goto loop;
 	}
 	if (cnt == -1)
-		msg("read error from %s: %s: [block %qd]: count=%d\n",
-			disk, strerror(errno), blkno, size);
+		msg("read error from %s: %s: [block %jd]: count=%d\n",
+			disk, strerror(errno), (intmax_t)blkno, size);
 	else
-		msg("short read error from %s: [block %qd]: count=%d, got=%d\n",
-			disk, blkno, size, cnt);
+		msg("short read error from %s: [block %jd]: count=%d, got=%d\n",
+			disk, (intmax_t)blkno, size, cnt);
 	if (++breaderrors > BREADEMAX) {
 		msg("More than %d block read errors from %s\n",
 			BREADEMAX, disk);
@@ -730,11 +730,11 @@ bread(ufs2_daddr_t blkno, char *buf, int size)
 		    ((off_t)blkno << dev_bshift))) == dev_bsize)
 			continue;
 		if (cnt == -1) {
-			msg("read error from %s: %s: [sector %qd]: count=%d\n",
-				disk, strerror(errno), blkno, dev_bsize);
+			msg("read error from %s: %s: [sector %jd]: count=%ld\n",
+			    disk, strerror(errno), (intmax_t)blkno, dev_bsize);
 			continue;
 		}
-		msg("short read error from %s: [sector %qd]: count=%d, got=%d\n",
-			disk, blkno, dev_bsize, cnt);
+		msg("short read from %s: [sector %jd]: count=%ld, got=%d\n",
+		    disk, (intmax_t)blkno, dev_bsize, cnt);
 	}
 }