diff --git a/.github/workflows/r2s_lienol.yml b/.github/workflows/r2s_lienol.yml
index b27bb10..db6eac6 100644
--- a/.github/workflows/r2s_lienol.yml
+++ b/.github/workflows/r2s_lienol.yml
@@ -80,7 +80,7 @@ jobs:
           git cherry-pick origin/master 8f734f05f11b9f94af3cf1469537587ef102e5f2^...origin/HEAD
           git checkout upstream/dev-19.07 -- feeds.conf.default
           #sed -i '/exit/i\echo "iptables -t nat -I POSTROUTING -j MASQUERADE" >> /etc/firewall.user' package/default-settings/files/zzz-default-settings
-          sed -i 's/option fullcone	1/option fullcone	0/' package/network/config/firewall/files/firewall.config
+          sed -i 's/option fullcone\t1/option fullcone\t0/' package/network/config/firewall/files/firewall.config
           sed -i '/8.8.8.8/d' package/base-files/files/root/setup.sh
           
       - name: Clean Feeds