diff --git a/.forgejo/workflows/build.yml b/.forgejo/workflows/build.yml
index 745ad39..dbd25a9 100644
--- a/.forgejo/workflows/build.yml
+++ b/.forgejo/workflows/build.yml
@@ -42,7 +42,7 @@ jobs:
         run: |
           YAML=$(curl -s "$REPO_URL/$YAML_FILE")
           FILENAME=$(echo "$YAML" | yq -r ".[] | select(.flavor == \"alpine-minirootfs\") | .file")
-          VERSION=$(echo "$filename" | sed 's/^alpine-minirootfs-//; s/-x86_64\.tar\.gz$//')
+          VERSION=$(echo "$FILENAME" | sed 's/^alpine-minirootfs-//; s/-x86_64\.tar\.gz$//')
           echo "VERSION=$VERSION" >> $GITHUB_ENV
 
           curl -LOs "$REPO_URL/$FILENAME"