diff --git a/src/Makefile.am b/src/Makefile.am
index e1c8204..cb7d8e1 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -3,6 +3,7 @@ wrapsix_dnsproxy_SOURCES = dnsproxy.c
 wrapsix_wrapper_SOURCES = \
 			  arp.c arp.h \
 			  checksum.c checksum.h \
+			  ethernet.h \
 			  icmp.c icmp.h \
 			  ipv4.c ipv4.h \
 			  ipv6.c ipv6.h \