diff --git a/nixos/modules/services/monitoring/cockpit.nix b/nixos/modules/services/monitoring/cockpit.nix
index 31620b31eb31..0ea4a5c163f8 100644
--- a/nixos/modules/services/monitoring/cockpit.nix
+++ b/nixos/modules/services/monitoring/cockpit.nix
@@ -55,6 +55,7 @@ in {
 
     systemd.packages = [ cfg.package ];
     systemd.sockets.cockpit.wantedBy = [ "multi-user.target" ];
+    systemd.sockets.cockpit.listenStreams = [ "" (toString cfg.port) ];
 
     systemd.tmpfiles.rules = [ # From $out/lib/tmpfiles.d/cockpit-tmpfiles.conf
       "C /run/cockpit/inactive.motd 0640 root root - ${cfg.package}/share/cockpit/motd/inactive.motd"
diff --git a/nixos/tests/cockpit.nix b/nixos/tests/cockpit.nix
index 5236f5311f02..0433cebf3b56 100644
--- a/nixos/tests/cockpit.nix
+++ b/nixos/tests/cockpit.nix
@@ -21,10 +21,11 @@ import ./make-test-python.nix (
           };
           services.cockpit = {
             enable = true;
+            port = 7890;
             openFirewall = true;
             settings = {
               WebService = {
-                Origins = "https://server:9090";
+                Origins = "https://server:7890";
               };
             };
           };
@@ -65,7 +66,7 @@ import ./make-test-python.nix (
                     driver.implicitly_wait(10)
 
                     log("Opening homepage")
-                    driver.get("https://server:9090")
+                    driver.get("https://server:7890")
 
 
                     def wait_elem(by, query, timeout=10):
@@ -107,7 +108,7 @@ import ./make-test-python.nix (
                     driver.find_element(By.CSS_SELECTOR, 'button#login-button').click()
 
                     # driver.implicitly_wait(1)
-                    # driver.get("https://server:9090/system")
+                    # driver.get("https://server:7890/system")
 
                     log("Waiting dashboard to load")
                     wait_title_contains("${user}@server")
@@ -143,9 +144,9 @@ import ./make-test-python.nix (
       start_all()
 
       server.wait_for_unit("sockets.target")
-      server.wait_for_open_port(9090)
+      server.wait_for_open_port(7890)
 
-      client.succeed("curl -k https://server:9090 -o /dev/stderr")
+      client.succeed("curl -k https://server:7890 -o /dev/stderr")
       print(client.succeed("whoami"))
       client.succeed('PYTHONUNBUFFERED=1 selenium-script')
     '';