diff --git a/.github/workflows/v18.yml b/.github/workflows/v18.yml
index 22ea991..18d5888 100644
--- a/.github/workflows/v18.yml
+++ b/.github/workflows/v18.yml
@@ -108,6 +108,7 @@ jobs:
       - name: Build FriendlyWrt
         run: |
           cd friendlywrt-h5
+          sed -i 's/set -eu/set -u/' scripts/mk-friendlywrt.sh
           ./build.sh nanopi_r1s.mk
       
       - name: Zip Files