diff --git a/firefox/10-manual.yml b/firefox/10-manual.yml
index 39f4cb2c..973e436d 100644
--- a/firefox/10-manual.yml
+++ b/firefox/10-manual.yml
@@ -9,4 +9,6 @@ manual:  # Manual proxy configuration
     address:
       description: HTTP address
       type: domainname
+      params:
+        allow_ip: true
 ...