diff --git a/Makefile b/Makefile
index 17b13b64..d5621267 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,8 @@ minimap2-lite:example.o libminimap2.a
 		$(CC) $(CFLAGS) $< -o $@ -L. -lminimap2 $(LIBS)
 
 libminimap2.a:$(OBJS)
-		$(AR) -csru $@ $(OBJS)
+		rm -f $@
+		$(AR) csrD $@ $(OBJS)
 
 sdust:sdust.c kalloc.o kalloc.h kdq.h kvec.h kseq.h ketopt.h sdust.h
 		$(CC) -D_SDUST_MAIN $(CFLAGS) $< kalloc.o -o $@ -lz