diff --git a/board/QEMU_Spike/GCC/demo/Makefile b/board/QEMU_Spike/GCC/demo/Makefile
index 523a045a..ef9e8ca6 100644
--- a/board/QEMU_Spike/GCC/demo/Makefile
+++ b/board/QEMU_Spike/GCC/demo/Makefile
@@ -55,6 +55,7 @@ ASM_SOURCES =
 
 ASM_SOURCES_S =  \
 $(TOP_DIR)/arch/risc-v/rv32i/gcc/port_s.S		\
+$(TOP_DIR)/arch/risc-v/spike/gcc/riscv_port_s.S	\
 start.S