diff --git a/roles/koji_builder/templates/builders/site-defaults.cfg b/roles/koji_builder/templates/builders/site-defaults.cfg
index 8365f8e259..1aaec8ea1c 100644
--- a/roles/koji_builder/templates/builders/site-defaults.cfg
+++ b/roles/koji_builder/templates/builders/site-defaults.cfg
@@ -21,3 +21,4 @@ config_opts['nspawn_args'] += ['--bind=/dev/fuse']
 config_opts['dnf_command'] = '/usr/bin/dnf-3'
 config_opts['system_dnf_command'] = '/usr/bin/dnf-3'
 config_opts['dnf_install_command'] = 'install python3-dnf dnf-plugins-core'
+config_opts['use_bootstrap_image'] = False