diff --git a/.gitea/workflows/build-ubuntu.yml b/.gitea/workflows/build-ubuntu.yml
index 8cb81a3..213824b 100644
--- a/.gitea/workflows/build-ubuntu.yml
+++ b/.gitea/workflows/build-ubuntu.yml
@@ -38,7 +38,7 @@ jobs:
           else
             echo "Image missing"
             curl -L -o "$IMAGE_FN.tgz" "https://gitea.psi.ch/api/packages/daqbuf/generic/$IMAGE_FN/0.1.1/$IMAGE_FN.tgz"
-            zstd -d -stdout <"$IMAGE_FN.tgz" | $PODMAN image load
+            zstd -d --stdout <"$IMAGE_FN.tgz" | $PODMAN image load
           fi
           echo "---  Image list  ------------------"
           $PODMAN image list