diff --git a/confs/site/main-lua.conf b/confs/site/main-lua.conf
index 9db9caa..3fe5f0a 100644
--- a/confs/site/main-lua.conf
+++ b/confs/site/main-lua.conf
@@ -26,23 +26,23 @@ local use_antibot_captcha	= %USE_ANTIBOT_CAPTCHA%
 local use_antibot_recaptcha	= %USE_ANTIBOT_RECAPTCHA%
 
 -- resolvers
-local dns_resolvers		= %DNS_RESOLVERS%
+local dns_resolvers		= {%DNS_RESOLVERS%}
 
 -- whitelist
 local use_whitelist_ip		= %USE_WHITELIST_IP%
 local use_whitelist_reverse	= %USE_WHITELIST_REVERSE%
-local whitelist_ip_list		= %WHITELIST_IP_LIST%
-local whitelist_reverse_list	= %WHITELIST_REVERSE_LIST%
+local whitelist_ip_list		= {%WHITELIST_IP_LIST%}
+local whitelist_reverse_list	= {%WHITELIST_REVERSE_LIST%}
 
 -- blacklist
 local use_blacklist_ip		= %USE_BLACKLIST_IP%
 local use_blacklist_reverse	= %USE_BLACKLIST_REVERSE%
-local blacklist_ip_list		= %BLACKLIST_IP_LIST%
-local blacklist_reverse_list	= %BLACKLIST_REVERSE_LIST%
+local blacklist_ip_list		= {%BLACKLIST_IP_LIST%}
+local blacklist_reverse_list	= {%BLACKLIST_REVERSE_LIST%}
 
 -- dnsbl
 local use_dnsbl			= %USE_DNSBL%
-local dnsbl_list		= %DNSBL_LIST%
+local dnsbl_list		= {%DNSBL_LIST%}
 
 -- bad behavior
 local use_bad_behavior		= %USE_BAD_BEHAVIOR%
diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index 74ae77f..8e47356 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -4,6 +4,8 @@
 
 When troubleshooting, the logs are your best friends. We try our best to provide user-friendly logs to help you understand what happened. Please note that we don't store the logs inside the container, they are all displayed on stdout/stderr so Docker can capture them. They can be displayed using the [docker logs](https://docs.docker.com/engine/reference/commandline/logs/) command.
 
+You can edit the `LOG_LEVEL` environment variable to increase or decrease the verbosity of logs with the following values : `debug`, `info`, `notice`, `warn`, `error`, `crit`, `alert` or `emerg`.
+
 ## Permissions
 
 Don't forget that bunkerized-nginx runs as an unprivileged user with UID/GID 101. Double check the permissions of files and folders for each volumes (see the [volumes list](https://bunkerized-nginx.readthedocs.io/en/latest/volumes.html)).