diff --git a/luci-app-my-dnshelper/Makefile b/luci-app-my-dnshelper/Makefile
index 7c34bb3d..3de662f6 100644
--- a/luci-app-my-dnshelper/Makefile
+++ b/luci-app-my-dnshelper/Makefile
@@ -17,9 +17,9 @@ LUCI_DEPENDS:=+my-dnshelper
 
 define Package/$(PKG_NAME)/postinst
 #!/bin/sh
-	chmod a+x ${IPKG_INSTROOT}/etc/init.d/my-dnshelper >/dev/null 2>&1 || echo ""
-	chmod a+x ${IPKG_INSTROOT}/usr/share/my-dnshelper/* >/dev/null 2>&1 || echo ""
-	chmod a+x ${IPKG_INSTROOT}/usr/bin/my-dnshelper >/dev/null 2>&1 || echo ""
+	chmod a+x $${IPKG_INSTROOT}/etc/init.d/my-dnshelper >/dev/null 2>&1 || echo ""
+	chmod a+x $${IPKG_INSTROOT}/usr/share/my-dnshelper/* >/dev/null 2>&1 || echo ""
+	chmod a+x $${IPKG_INSTROOT}/usr/bin/my-dnshelper >/dev/null 2>&1 || echo ""
 	exit 0
 endef