diff --git a/libexec/rbootd/rmpproto.c b/libexec/rbootd/rmpproto.c
index 17ea202748d8..78c2488f9a84 100644
--- a/libexec/rbootd/rmpproto.c
+++ b/libexec/rbootd/rmpproto.c
@@ -54,6 +54,7 @@ static const char rcsid[] =
 
 #include <sys/param.h>
 #include <sys/time.h>
+#include <netinet/in.h>
 
 #include <errno.h>
 #include <fcntl.h>
diff --git a/libexec/rbootd/utils.c b/libexec/rbootd/utils.c
index c967bc7fbcf7..138bc4cc0078 100644
--- a/libexec/rbootd/utils.c
+++ b/libexec/rbootd/utils.c
@@ -54,6 +54,7 @@ static const char rcsid[] =
 
 #include <sys/param.h>
 #include <sys/time.h>
+#include <netinet/in.h>
 
 #include <fcntl.h>
 #include <signal.h>
diff --git a/usr.bin/gprof/aout.c b/usr.bin/gprof/aout.c
index 6daa80336c2c..349a471f1d9a 100644
--- a/usr.bin/gprof/aout.c
+++ b/usr.bin/gprof/aout.c
@@ -41,6 +41,8 @@ static char sccsid[] = "@(#)gprof.c	8.1 (Berkeley) 6/6/93";
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <netinet/in.h>
+
 #include <a.out.h>
 #include <err.h>
 
diff --git a/usr.sbin/crunch/crunchide/exec_aout.c b/usr.sbin/crunch/crunchide/exec_aout.c
index 1300efd251f8..6aa1b8b55690 100644
--- a/usr.sbin/crunch/crunchide/exec_aout.c
+++ b/usr.sbin/crunch/crunchide/exec_aout.c
@@ -39,6 +39,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/types.h>
 #include <sys/stat.h> 
 #include <sys/errno.h>
+#include <netinet/in.h>
 
 #include "extern.h"
 
diff --git a/usr.sbin/sliplogin/sliplogin.c b/usr.sbin/sliplogin/sliplogin.c
index 8a3bc5ee6f6c..e1f8c7ef88b6 100644
--- a/usr.sbin/sliplogin/sliplogin.c
+++ b/usr.sbin/sliplogin/sliplogin.c
@@ -79,6 +79,7 @@ static char rscid[] = "@(#)$FreeBSD$";
 #include <sys/ioctl.h>
 #include <net/slip.h>
 #include <net/if.h>
+#include <netinet/in.h>
 
 #include <stdio.h>
 #include <errno.h>