diff --git a/inventory/group_vars/buildvm_s390x_stg b/inventory/group_vars/buildvm_s390x_stg
index 5ac826ad8d..cc82b54910 100644
--- a/inventory/group_vars/buildvm_s390x_stg
+++ b/inventory/group_vars/buildvm_s390x_stg
@@ -3,6 +3,7 @@ createrepo: False
 host_group: kojibuilder
 koji_hub_nfs: "fedora_koji"
 koji_server_url: "https://koji.stg.fedoraproject.org/kojihub"
+koji_instance: "primary"
 koji_topurl: "https://kojipkgs.stg.fedoraproject.org/"
 koji_weburl: "https://koji.stg.fedoraproject.org/koji"
 ks_repo: https://infrastructure.fedoraproject.org/pub/fedora-secondary/releases/41/Server/s390x/os/