diff --git a/nixos/modules/ddns.nix b/nixos/modules/ddns.nix
index 23db98b..3b6abb2 100644
--- a/nixos/modules/ddns.nix
+++ b/nixos/modules/ddns.nix
@@ -29,7 +29,6 @@ with lib; let
 
             curl_url=$(url "$user" "$password" ${domain})
 
-            ${pkgs.curl}/bin/curl -4 "$curl_url" ${if interface == null then "" else "--interface ${interface}"}
             ${pkgs.curl}/bin/curl -6 "$curl_url" ${if interface == null then "" else "--interface ${interface}"}
           '';
         }));