diff --git a/sys/boot/alpha/common/Makefile.common b/sys/boot/alpha/common/Makefile.common
index 16ce2493ed01..8ba498a6120b 100644
--- a/sys/boot/alpha/common/Makefile.common
+++ b/sys/boot/alpha/common/Makefile.common
@@ -6,6 +6,9 @@
 
 # Alpha-specific bootstrap sources
 SRCS+=		main.c conf.c
+.if ${BASE} == netboot
+SRCS+=		dev_net.c
+.endif
 
 # Always add MI sources 
 .PATH:		${.CURDIR}/../../common