diff --git a/make-linux.mk b/make-linux.mk
index 260bf1e4b..b87981a32 100644
--- a/make-linux.mk
+++ b/make-linux.mk
@@ -33,7 +33,7 @@ DEFS=-DZT_ENABLE_NETCON
 LDLIBS?=
 
 include objects.mk
-OBJS+=osdep/LinuxEthernetTap.o netcon/NetconEthernetTap.o
+OBJS+=osdep/LinuxEthernetTap.o netcon/NetconEthernetTap.o osdep/Arp.o
 
 # "make official" is a shortcut for this
 ifeq ($(ZT_OFFICIAL_RELEASE),1)