diff --git a/sbin/dhclient/parse.c b/sbin/dhclient/parse.c
index 909fc87f72dc..4018f70f3a5d 100644
--- a/sbin/dhclient/parse.c
+++ b/sbin/dhclient/parse.c
@@ -45,6 +45,8 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <stdbool.h>
+
 #include "dhcpd.h"
 #include "dhctoken.h"