diff --git a/CHANGELOG.md b/CHANGELOG.md
deleted file mode 100644
index 7f13f2ac..00000000
--- a/CHANGELOG.md
+++ /dev/null
@@ -1,5 +0,0 @@
-# Modified variable
-
-| Variable                                                                                                                                                                                              | Description                                                                                                                                                                                                                                                             |
-|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| **<a id="proxy_dns_socks5" name="proxy_dns_socks5">proxy_dns_socks5</a>**<br/>[`boolean`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory` <ins>*`disabled`*</ins> | Use proxy DNS when using SOCKS v5.<br/>**Default**: false<br/>**Disabled**: <ins>if "[Configure Proxy Access to the Internet](#proxy_mode)" is not "Manual proxy configuration"<br/>or "[SOCKS host version used by proxy](#manual.socks_proxy.version)" is "v4".</ins> |
diff --git a/firefox/55-proxy_dns_socks5.yml b/firefox/55-proxy_dns_socks5.yml
index 55bddd3b..2dbe9d1c 100644
--- a/firefox/55-proxy_dns_socks5.yml
+++ b/firefox/55-proxy_dns_socks5.yml
@@ -7,7 +7,7 @@ proxy_dns_socks5:
   default: false
   disabled:
     jinja: |-
-      {{ _.proxy_mode != "Manual proxy configuration" or _.manual.socks_proxy.version == 'v4' }}
+      {{ _.manual.socks_proxy.version is propertyerror or _.manual.socks_proxy.version == 'v4' }}
     return_type: boolean
     description: |-
       if "_.proxy_mode" is not "Manual proxy configuration"