diff --git a/server_environment_files_sample/dev/base.conf b/server_environment_files_sample/dev/base.conf
index b2cc833..036aea7 100644
--- a/server_environment_files_sample/dev/base.conf
+++ b/server_environment_files_sample/dev/base.conf
@@ -9,3 +9,4 @@ lib_path = /myHome/lib/wkhtmltopdf-linux-i386-0-9-9
 
 [ir.config_parameter]
 ircp_from_config=config_value
+ircp_empty=