diff --git a/src/bin/fwcontrol/fwcontrol.c b/src/bin/fwcontrol/fwcontrol.c
index 094046cf63..eac83826b3 100644
--- a/src/bin/fwcontrol/fwcontrol.c
+++ b/src/bin/fwcontrol/fwcontrol.c
@@ -47,6 +47,7 @@ __FBSDID("$FreeBSD: src/usr.sbin/fwcontrol/fwcontrol.c$");
 #include "fwphyreg.h"
 #include "iec68113.h"
 #include <errno.h>
+#include <strings.h>
 #define EX_SOFTWARE 1
 #define EX_IOERR 1
 #else
diff --git a/src/bin/fwcontrol/fwdv.c b/src/bin/fwcontrol/fwdv.c
index e403f66e65..a6612f8439 100644
--- a/src/bin/fwcontrol/fwdv.c
+++ b/src/bin/fwcontrol/fwdv.c
@@ -54,6 +54,7 @@
 #include <string.h>
 #ifdef __HAIKU__
 #include <stdint.h>
+#include <strings.h>
 #include <endian.h>
 #include "firewire.h"
 #include "iec68113.h"