diff --git a/doc/common_options.sgml.in b/doc/common_options.sgml.in
index 38783dd1e..978c0ba0d 100644
--- a/doc/common_options.sgml.in
+++ b/doc/common_options.sgml.in
@@ -106,6 +106,21 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+
+
+ Specify the configuration file to configure the virtualization
+ and isolation functionalities for the container.
+
+
+ This configuration file if present will be used even if there is
+ already a configuration file present in the previously created
+ container (via lxc-create).
+
+
+
+