diff --git a/usr.bin/ktrace/ktrace.c b/usr.bin/ktrace/ktrace.c
index fa2fa1a9087..4490849c665 100644
--- a/usr.bin/ktrace/ktrace.c
+++ b/usr.bin/ktrace/ktrace.c
@@ -51,7 +51,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/ktrace.h>
 
 #include <err.h>
-#include <stdlib.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
diff --git a/usr.bin/ncplogin/ncplogin.c b/usr.bin/ncplogin/ncplogin.c
index 05b95c14e38..edb903e70a0 100644
--- a/usr.bin/ncplogin/ncplogin.c
+++ b/usr.bin/ncplogin/ncplogin.c
@@ -42,8 +42,6 @@ __FBSDID("$FreeBSD$");
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdlib.h>
-#include <string.h>
 #include <sysexits.h>
 #include <unistd.h>
 
diff --git a/usr.bin/systat/netstat.c b/usr.bin/systat/netstat.c
index 2f8ca0a4b0a..b1c6dc9e3f1 100644
--- a/usr.bin/systat/netstat.c
+++ b/usr.bin/systat/netstat.c
@@ -63,7 +63,6 @@ static const char sccsid[] = "@(#)netstat.c	8.1 (Berkeley) 6/6/93";
 #define TCPSTATES
 #include <netinet/tcp_fsm.h>
 #include <netinet/tcp_timer.h>
-#include <netinet/tcp_var.h>
 #include <netinet/tcp_debug.h>
 #include <netinet/udp.h>
 #include <netinet/udp_var.h>
diff --git a/usr.bin/tftp/main.c b/usr.bin/tftp/main.c
index 2bdcf5fde49..da0e5df1ad5 100644
--- a/usr.bin/tftp/main.c
+++ b/usr.bin/tftp/main.c
@@ -52,7 +52,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/socket.h>
 #include <sys/sysctl.h>
 #include <sys/file.h>
-#include <sys/param.h>
 #include <sys/stat.h>
 
 #include <netinet/in.h>
diff --git a/usr.bin/vmstat/vmstat.c b/usr.bin/vmstat/vmstat.c
index cda77adc33d..d31fdb54502 100644
--- a/usr.bin/vmstat/vmstat.c
+++ b/usr.bin/vmstat/vmstat.c
@@ -43,7 +43,6 @@ static char sccsid[] = "@(#)vmstat.c	8.1 (Berkeley) 6/6/93";
 __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
-#include <sys/time.h>
 #include <sys/proc.h>
 #include <sys/uio.h>
 #include <sys/namei.h>