diff --git a/sys/modules/em/Makefile b/sys/modules/em/Makefile
index 8005034120a..1de7c62298e 100644
--- a/sys/modules/em/Makefile
+++ b/sys/modules/em/Makefile
@@ -2,7 +2,8 @@
 
 .PATH:  ${.CURDIR}/../../dev/e1000
 KMOD    = if_em
-SRCS    = device_if.h bus_if.h pci_if.h opt_ddb.h opt_inet.h opt_inet6.h
+SRCS    = device_if.h bus_if.h pci_if.h opt_ddb.h opt_em.h opt_inet.h \
+	  opt_inet6.h 
 SRCS    += $(CORE_SRC) $(LEGACY_SRC)
 SRCS	+= $(COMMON_SHARED) $(LEGACY_SHARED) $(PCIE_SHARED)
 CORE_SRC = if_em.c e1000_osdep.c