diff --git a/sys/modules/sgx/Makefile b/sys/modules/sgx/Makefile
index 7184949ba0bc..8448b12c35d4 100644
--- a/sys/modules/sgx/Makefile
+++ b/sys/modules/sgx/Makefile
@@ -3,8 +3,9 @@
 .PATH: ${SRCTOP}/sys/amd64/sgx
 
 KMOD=	sgx
-SRCS=	sgx.c sgxvar.h assym.s sgx_support.S
+SRCS=	sgx.c sgxvar.h sgx_support.S
 SRCS+=	opt_compat.h opt_hwpmc_hooks.h opt_kstack_pages.h
+DPSRCS=	assym.s
 
 sgx_support.o:  assym.s
 	${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \