diff --git a/contiki/doc/Doxyfile b/contiki/doc/Doxyfile
index 730e69b..8b7c7fe 100644
--- a/contiki/doc/Doxyfile
+++ b/contiki/doc/Doxyfile
@@ -66,6 +66,8 @@
                          ../ctk/ctk-draw.h \
                          ../ctk/ctk-vncserver.c \
                          ../uip/uip.h \
+                         ../uip/uip_arp.h \
+                         ../uip/uip_arp.c \
                          ../ek/loader.h \
                          ../ek/dispatcher.h \
                          ../lib/cc.h \