diff --git a/templates/apache.conf b/templates/apache.conf
index d7405e6a3635769afb13caabfe27521540d6d7e5..d036fdf28caf4720b31ca668ab144feb28c1b679 100644
--- a/templates/apache.conf
+++ b/templates/apache.conf
@@ -13,7 +13,7 @@
 
   SetEnvIf X-Forwarded-For "^.*\..*\..*\..*" forwarded
   LogLevel warn
-{% if apache_version == '2.4' %}
+{% if apache_version|default('2.4') == '2.4' %}
   ErrorLogFormat "[%{u}t] [%l] [pid %P] [client\ %{X-Forwarded-For}i] %M% ,\ referer:\ %{Referer}i"
 {% endif %}
   LogFormat "%{X-Forwarded-For}i %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" proxy