diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index ab3ddfe4f..2812e6e8c 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -88,7 +88,7 @@ int main(int argc, char *argv[])
 	else server_config.lease = LEASE_TIME;
 
 	/* Sanity check */
-	num_ips = ntohl(server_config.end) - ntohl(server_config.start);
+	num_ips = ntohl(server_config.end) - ntohl(server_config.start) + 1;
 	if (server_config.max_leases > num_ips) {
 		LOG(LOG_ERR, "max_leases value (%lu) not sane, "
 			"setting to %lu instead",