diff --git a/nixos/tests/xmpp/prosody.nix b/nixos/tests/xmpp/prosody.nix
index e8d0677107f4..50df32f49601 100644
--- a/nixos/tests/xmpp/prosody.nix
+++ b/nixos/tests/xmpp/prosody.nix
@@ -41,9 +41,9 @@ import ../make-test-python.nix {
       {
         security.pki.certificateFiles = [ "${cert pkgs}/cert.pem" ];
         networking.extraHosts = ''
-          ${nodes.server.config.networking.primaryIPAddress} example.com
-          ${nodes.server.config.networking.primaryIPAddress} conference.example.com
-          ${nodes.server.config.networking.primaryIPAddress} uploads.example.com
+          ${nodes.server.networking.primaryIPAddress} example.com
+          ${nodes.server.networking.primaryIPAddress} conference.example.com
+          ${nodes.server.networking.primaryIPAddress} uploads.example.com
         '';
         environment.systemPackages = [
           (pkgs.callPackage ./xmpp-sendmessage.nix { connectTo = "example.com"; })