diff --git a/package/lean/mt/luci-app-mtwifi/Makefile b/package/lean/mt/luci-app-mtwifi/Makefile
index eba484d61f..6706a21bcb 100644
--- a/package/lean/mt/luci-app-mtwifi/Makefile
+++ b/package/lean/mt/luci-app-mtwifi/Makefile
@@ -9,6 +9,10 @@ LUCI_PKGARCH:=all
 PKG_VERSION:=1
 PKG_RELEASE:=8
 
+define Package/luci-app-mtwifi/conffiles
+/etc/wireless/mt7615/
+endef
+
 include $(TOPDIR)/feeds/luci/luci.mk
 
 # call BuildPackage - OpenWrt buildroot signature
diff --git a/package/lean/mt/luci-app-mtwifi/root/lib/upgrade/keep.d/mtwifi b/package/lean/mt/luci-app-mtwifi/root/lib/upgrade/keep.d/mtwifi
new file mode 100644
index 0000000000..73cf64e8f1
--- /dev/null
+++ b/package/lean/mt/luci-app-mtwifi/root/lib/upgrade/keep.d/mtwifi
@@ -0,0 +1,2 @@
+/etc/wireless/mt7615/
+