diff --git a/test/unit/dhcp/test_dhcp.c b/test/unit/dhcp/test_dhcp.c
index 0d0e81af..67cc7285 100644
--- a/test/unit/dhcp/test_dhcp.c
+++ b/test/unit/dhcp/test_dhcp.c
@@ -2,6 +2,7 @@
 
 #include "lwip/netif.h"
 #include "lwip/dhcp.h"
+#include "lwip/prot/dhcp.h"
 #include "netif/etharp.h"
 
 struct netif net_test;