diff --git a/package/istoreos-files/Makefile b/package/istoreos-files/Makefile
index 9ee99a5d14..b7ff7d6cdf 100644
--- a/package/istoreos-files/Makefile
+++ b/package/istoreos-files/Makefile
@@ -44,7 +44,7 @@ HOST_SED="$(subst ${STAGING_DIR_HOST},$${STAGING_DIR_HOST},$(SED))"
 HOST_LN="$(subst ${STAGING_DIR_HOST},$${STAGING_DIR_HOST},$(LN))"
 
 [ -n "$${IPKG_INSTROOT}" ] && {
-	$${HOST_SED} '/^src\/gz openwrt_\(base\|luci\|packages\|routing\|telephony\) /!d' "$${IPKG_INSTROOT}/etc/opkg/distfeeds.conf"
+	$${HOST_SED} '/^src\/gz openwrt_\(core\|base\|luci\|packages\|routing\|telephony\) /!d' "$${IPKG_INSTROOT}/etc/opkg/distfeeds.conf"
 
 	$${HOST_SED} 's/"192.168.1.1"/"192.168.100.1"/' \
 		"$${IPKG_INSTROOT}/usr/lib/lua/luci/controller/admin/system.lua" \
@@ -68,8 +68,9 @@ HOST_LN="$(subst ${STAGING_DIR_HOST},$${STAGING_DIR_HOST},$(LN))"
 
 	rm -f "$${IPKG_INSTROOT}/etc/uci-defaults/luci-argon-config"
 
-	true
 }
+true
+
 endef
 
 $(eval $(call BuildPackage,istoreos-files))
diff --git a/target/linux/realtek/base-files.mk b/target/linux/realtek/base-files.mk
index ef06f2920d..77bd2f6bf8 100644
--- a/target/linux/realtek/base-files.mk
+++ b/target/linux/realtek/base-files.mk
@@ -2,3 +2,16 @@
 define Package/base-files/install-target
 	chmod 0400 $(1)/etc/public.key
 endef
+
+define Package/base-files/postinst
+#!/bin/sh
+
+HOST_SED="$(subst ${STAGING_DIR_HOST},$${STAGING_DIR_HOST},$(SED))"
+HOST_LN="$(subst ${STAGING_DIR_HOST},$${STAGING_DIR_HOST},$(LN))"
+
+[ -n "$${IPKG_INSTROOT}" ] && {
+	$${HOST_SED} '/^src\/gz openwrt_core /d' "$${IPKG_INSTROOT}/etc/opkg/distfeeds.conf"
+}
+true
+
+endef