diff --git a/.github/workflows/build-katsu.yml b/.github/workflows/build-katsu.yml
index 8fae6cd..7dec9a8 100644
--- a/.github/workflows/build-katsu.yml
+++ b/.github/workflows/build-katsu.yml
@@ -101,7 +101,7 @@ jobs:
         run: |
           pushd katsu
           KATSU_LOG=trace KATSU_DRACUT_EXTRA_ARGS="--debug" katsu -v --output=disk-image modules/${{ matrix.variant }}-${{ matrix.arch }}.yaml
-          xz -z9 katsu-work/image/katsu.img -c > katsu-work/image/ultramarine-39-${{ env.arch }}.img.xz
+          xz -z9 katsu-work/image/katsu.img -c > katsu-work/image/ultramarine-39-${{ matrix.arch }}.img.xz
           popd
 
       - name: Upload Artifact