diff --git a/nightsky/Makefile b/nightsky/Makefile
index b01ac2c..610d369 100644
--- a/nightsky/Makefile
+++ b/nightsky/Makefile
@@ -56,7 +56,7 @@ endef
 
 define Package/nightsky/postinst
 #! /bin/sh
-cp /usr/share/nightsky/example-nightsky.yml /root/.nightsky.yml
+cp $${IPKG_INSTROOT}/usr/share/nightsky/example-nightsky.yml $${IPKG_INSTROOT}/root/.nightsky.yml
 endef
 
 $(eval $(call BuildPackage,nightsky))