diff --git a/conf/config.inc.php b/conf/config.inc.php
index 9b4d354..2afb781 100644
--- a/conf/config.inc.php
+++ b/conf/config.inc.php
@@ -44,7 +44,7 @@ $config['db_dsnw'] = 'mysql://__DBUSER__:__DBPASS__@localhost/__DBNAME__';
 // %d - domain (http hostname $_SERVER['HTTP_HOST'] without the first part)
 // %s - domain name after the '@' from e-mail address provided at login screen
 // For example %n = mail.domain.tld, %t = domain.tld
-$config['default_host'] = 'localhost';
+$config['default_host'] = '__DOMAIN__';
 
 // SMTP server host (for sending mails).
 // To use SSL/TLS connection, enter hostname with prefix ssl:// or tls://
diff --git a/scripts/install b/scripts/install
index c96f525..508aae9 100644
--- a/scripts/install
+++ b/scripts/install
@@ -130,6 +130,7 @@ ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_name" --tar
 ynh_replace_string --match_string="__DBPASS__" --replace_string="$db_pwd" --target_file="$rc_conf"
 ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$rc_conf"
 ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$rc_conf"
+ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$rc_conf"
 
 #=================================================
 # INSTALL ADDITIONAL PLUGINS
diff --git a/scripts/upgrade b/scripts/upgrade
index 3a6f394..4650c0c 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -155,7 +155,8 @@ then
     ynh_replace_string --match_string="__DBPASS__" --replace_string="$db_pwd" --target_file="$rc_conf"
     ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$rc_conf"
     ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$rc_conf"
-
+    ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$rc_conf"
+    
     #=================================================
     # UPDATE DEPENDENCIES WITH COMPOSER
     #=================================================