diff --git a/board/walnut405/Makefile b/board/walnut405/Makefile
index 12b2fa8..97d6a1e 100644
--- a/board/walnut405/Makefile
+++ b/board/walnut405/Makefile
@@ -29,7 +29,7 @@
 SOBJS	= init.o
 
 $(LIB):	$(OBJS) $(SOBJS)
-	$(AR) crv $@ $^
+	$(AR) crv $@ $(OBJS)
 
 clean:
 	rm -f $(SOBJS) $(OBJS)