diff --git a/nixos/tests/mumble.nix b/nixos/tests/mumble.nix
index 32aae916139..3759d73355d 100644
--- a/nixos/tests/mumble.nix
+++ b/nixos/tests/mumble.nix
@@ -30,21 +30,21 @@ in
     $client1->execute("mumble mumble://client1\@server/test &");
     $client2->execute("mumble mumble://client2\@server/test &");
 
-    $client1->waitForWindow(qr/Mumble/);
-    $client2->waitForWindow(qr/Mumble/);
-    $server->sleep(3); # Wait some more for the Mumble UI
-
     # cancel client audio configuration
+    $client1->waitForWindow(qr/Audio Tuning Wizard/);
+    $client2->waitForWindow(qr/Audio Tuning Wizard/);
     $client1->sendKeys("esc");
     $client2->sendKeys("esc");
-    $server->sleep(1);
 
     # cancel client cert configuration
+    $client1->waitForWindow(qr/Certificate Management/);
+    $client2->waitForWindow(qr/Certificate Management/);
     $client1->sendKeys("esc");
     $client2->sendKeys("esc");
-    $server->sleep(1);
 
     # accept server certificate
+    $client1->waitForWindow(qr/^Mumble$/);
+    $client2->waitForWindow(qr/^Mumble$/);
     $client1->sendChars("y");
     $client2->sendChars("y");