diff --git a/make/installwin.mk b/make/installwin.mk
index f1b79ff..fa24a00 100644
--- a/make/installwin.mk
+++ b/make/installwin.mk
@@ -1,5 +1,6 @@
 installwin: all
 	$(RM) -r $(INSTALL_DIR)
+	mkdir $(INSTALL_DIR)
 	mkdir $(INSTALL_DIR)/bin
 	mkdir $(INSTALL_DIR)/lib
 	mkdir $(INSTALL_DIR)/include