diff --git a/src/cmd-build b/src/cmd-build
index 05298ce6ca..d7766f66a0 100755
--- a/src/cmd-build
+++ b/src/cmd-build
@@ -388,12 +388,12 @@ else
         null|oci)
             ostree_tarfile_path="${name}-${buildid}-ostree.${basearch}.ociarchive"
             gitsrc=$(jq -r .git.origin < "${PWD}/coreos-assembler-config-git.json")
-            runv ostree container encapsulate --repo="${tmprepo}" \
+            runv rpm-ostree container-encapsulate --repo="${tmprepo}" \
                 --label="coreos-assembler.image-config-checksum=${image_config_checksum}" \
                 --label="coreos-assembler.image-input-checksum=${image_input_checksum}" \
                 --label="org.opencontainers.image.source=${gitsrc}" \
                 --label="org.opencontainers.image.revision=${config_gitrev}" \
-                "${buildid}" \
+                --ref="${buildid}" \
                 oci-archive:"${ostree_tarfile_path}".tmp:latest
             ;;
         *) fatal "Unknown ostree-format: ${ostree_format}"