diff --git a/sys/modules/if_epair/Makefile b/sys/modules/if_epair/Makefile
index ee0757577c4..3e102413bfe 100644
--- a/sys/modules/if_epair/Makefile
+++ b/sys/modules/if_epair/Makefile
@@ -3,6 +3,6 @@
 .PATH: ${SRCTOP}/sys/net
 
 KMOD=	if_epair
-SRCS=	if_epair.c
+SRCS=	bus_if.h device_if.h if_epair.c
 
 .include <bsd.kmod.mk>