diff --git a/bin/rcp/rcp.c b/bin/rcp/rcp.c
index 2c27b639f21..4577b208f04 100644
--- a/bin/rcp/rcp.c
+++ b/bin/rcp/rcp.c
@@ -71,7 +71,6 @@ __FBSDID("$FreeBSD$");
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <string.h>
 #include <unistd.h>
 
 #include "extern.h"
diff --git a/bin/sh/mkinit.c b/bin/sh/mkinit.c
index 866b238042f..1d1d93edaf9 100644
--- a/bin/sh/mkinit.c
+++ b/bin/sh/mkinit.c
@@ -55,7 +55,6 @@ __FBSDID("$FreeBSD$");
  */
 
 
-#include <sys/cdefs.h>
 #include <sys/types.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/sbin/savecore/savecore.c b/sbin/savecore/savecore.c
index d54fcf59ac4..ea715f345c2 100644
--- a/sbin/savecore/savecore.c
+++ b/sbin/savecore/savecore.c
@@ -66,7 +66,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/disk.h>
 #include <sys/kerneldump.h>
-#include <sys/param.h>
 #include <sys/mount.h>
 #include <sys/stat.h>
 #include <errno.h>