diff --git a/metadata/dev.ukanth.ufirewall.txt b/metadata/dev.ukanth.ufirewall.txt
index 1bbac5a9d5..5436256b32 100644
--- a/metadata/dev.ukanth.ufirewall.txt
+++ b/metadata/dev.ukanth.ufirewall.txt
@@ -220,7 +220,7 @@ Build:1.2.9,152
 Build:1.3.1,163
     commit=v1.3.1
     submodules=yes
-    prebuild=rm -f res/raw/{iptables,ip6tables,busybox,nflog}*
+    scandelete=res/raw
     build=make -C external NDK=$$NDK$$
     buildjni=no