diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index bc8682b..04dd8ca 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -18,7 +18,7 @@ jobs:
           find /mnt/deploy -mindepth 1 -delete
           cp -R . /mnt/deploy/
           rm -rf /mnt/deploy/.git /mnt/deploy/.gitea
-          SHA="${{ github.sha }}"
-          echo "${{ github.run_number }} (${SHA:0:7})" > /mnt/deploy/build.txt
+          SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)
+          echo "${{ github.run_number }} ($SHORT_SHA)" > /mnt/deploy/build.txt
           find /mnt/deploy -type d -exec chmod 755 {} +
           find /mnt/deploy -type f -exec chmod 644 {} +