diff --git a/Makefile b/Makefile
index f3f4c76..76af4ff 100644
--- a/Makefile
+++ b/Makefile
@@ -37,17 +37,20 @@ define Package/luci-theme-$(THEME_NAME)/install
 	$(CP) -a ./luasrc/* $(1)/www/luci-static/$(THEME_NAME)/ 2>/dev/null || true
 	$(INSTALL_DIR) $(1)/usr/lib/lua/luci/view/themes/$(THEME_NAME)
 	$(CP) -a ./template/* $(1)/usr/lib/lua/luci/view/themes/$(THEME_NAME)/ 2>/dev/null || true
-	$(INSTALL_DIR) $(1)/www/luci-static/resources
-	$(CP) -a ./js/* $(1)/www/luci-static/resources/ 2>/dev/null || true
-	$(INSTALL_DIR) $(1)/www/luci-static/resources/view/dashboard/css
-	$(CP) ./css/custom.css $(1)/www/luci-static/resources/view/dashboard/css/custom.css
+    $(INSTALL_DIR) $(1)/tmp/luci-theme-$(THEME_NAME)
+    $(CP) ./css/custom.css $(1)/tmp/luci-theme-$(THEME_NAME)/custom.css
 endef
 
 define Package/luci-theme-$(THEME_NAME)/postinst
 #!/bin/sh
 [ -n "$${IPKG_INSTROOT}" ] || {
         ( . /etc/uci-defaults/30-luci-theme-$(THEME_NAME) ) && rm -f /etc/uci-defaults/30-luci-theme-$(THEME_NAME)
+        # Always overwrite custom.css
+        mv -f /tmp/luci-theme-$(THEME_NAME)/custom.css /www/luci-static/resources/view/dashboard/css/custom.css
+        # Remove the temporary directory
+        rm -rf /tmp/luci-theme-$(THEME_NAME)
 }
 endef
 
+
 $(eval $(call BuildPackage,luci-theme-$(THEME_NAME)))