diff --git a/luci-theme-alpha/Makefile b/luci-theme-alpha/Makefile
index 44174974..8f01a3ce 100644
--- a/luci-theme-alpha/Makefile
+++ b/luci-theme-alpha/Makefile
@@ -46,9 +46,13 @@ endef
 
 define Package/luci-theme-$(THEME_NAME)/postinst
 #!/bin/sh
-[ -n "$${IPKG_INSTROOT}" ] || {
-	( . /etc/uci-defaults/30-luci-theme-$(THEME_NAME) ) && rm -f /etc/uci-defaults/30-luci-theme-$(THEME_NAME)
-}
+if [ -z "$${IPKG_INSTROOT}" ]; then
+	if [ -f /etc/uci-defaults/30-luci-theme-$(THEME_NAME) ]; then
+		. /etc/uci-defaults/30-luci-theme-$(THEME_NAME)
+		rm -f /etc/uci-defaults/30-luci-theme-$(THEME_NAME)
+	fi
+fi
+exit 0
 endef
 
 $(eval $(call BuildPackage,luci-theme-$(THEME_NAME)))
diff --git a/luci-theme-alpha/README.md b/luci-theme-alpha/README.md
index e251e3c4..179b6bb3 100644
--- a/luci-theme-alpha/README.md
+++ b/luci-theme-alpha/README.md
@@ -71,6 +71,9 @@ DBAI (Device Berbasis Arm Indonesia)
 this theme using bootstrap framework + vanilla css
 icons made by me + flaticons
 
+### Attention 
+This theme required luci-theme-alpha-config installed
+
 donate
 buy me a padang rice or coffee
 https://saweria.co/derisamedia