diff --git a/netutils/dhcpd/dhcpd.c b/netutils/dhcpd/dhcpd.c
index d13d7cee5..b0f171384 100644
--- a/netutils/dhcpd/dhcpd.c
+++ b/netutils/dhcpd/dhcpd.c
@@ -56,6 +56,7 @@
 #  include <debug.h>                 /* For ndbg, vdbg */
 #  include <nuttx/compiler.h>        /* For CONFIG_CPP_HAVE_WARNING */
 #  include <arch/irq.h>              /* For irqstore() and friends -- REVISIT */
+#  include <nuttx/net/net.h>         /* For net_lock() and friends */
 #  include <nuttx/net/arp.h>         /* For low-level ARP interfaces -- REVISIT */
 #  include <apps/netutils/dhcpd.h>   /* Advertised DHCPD APIs */
 #endif