diff --git a/buildsys.mk.in b/buildsys.mk.in
index 0802e42..9646373 100644
--- a/buildsys.mk.in
+++ b/buildsys.mk.in
@@ -208,7 +208,7 @@ ${STATIC_LIB} ${STATIC_LIB_NOINST}: ${EXT_DEPS} ${OBJS}
 		rm -fr $$dir; \
 		mkdir -p $$dir; \
 		cd $$dir; \
-		ar x ../$$i; \
+		${AR} x ../$$i; \
 		for j in *.o; do \
 			objs="$$objs $$dir/$$j"; \
 		done; \