diff --git a/heka/files/input/logstreamer.toml b/heka/files/input/logstreamer.toml
index 06bb76d..8e3ac11 100644
--- a/heka/files/input/logstreamer.toml
+++ b/heka/files/input/logstreamer.toml
@@ -14,3 +14,6 @@
 {% if values.differentiator is defined %}
 differentiator = {{ values.differentiator }}
 {% endif %}
+{% if values.oldest_duration is defined %}
+oldest_duration = "{{ values.oldest_duration }}"
+{% endif %}