diff --git a/templates/lb-config-args.j2 b/templates/lb-config-args.j2
index 03fb497..63da45b 100644
--- a/templates/lb-config-args.j2
+++ b/templates/lb-config-args.j2
@@ -27,5 +27,5 @@
 --backports true
 {% endif %}
 {% if debian_components is defined %}
---archive-areas {% debian_components | join(",") %}
+--archive-areas {{ debian_components | join(",") }}
 {% endif %}