diff --git a/heka/files/input/amqp.toml b/heka/files/input/amqp.toml
index a103d30..3e44924 100644
--- a/heka/files/input/amqp.toml
+++ b/heka/files/input/amqp.toml
@@ -3,7 +3,11 @@
 url = "amqp://{{ values.user }}:{{ values.password }}@{{ values.host }}:{{ values.port }}/{{ values.vhost }}"
 exchange = "{{ values.exchange }}"
 exchange_type = "{{ values.exchange_type }}"
+
+{% if values.exchange_durability is defined %}
 exchange_durability = "{{ values.exchange_durability }}"
+{% endif %}
+
 exchange_auto_delete = "{{ values.exchange_auto_delete }}"
 queue_auto_delete = {{ values.queue_auto_delete }}
 queue = "{{ values.queue }}"