diff --git a/qemu/tests/virtio_console.py b/qemu/tests/virtio_console.py
index 25b2bae953c37dfe26e05bc6a554eb6181bfca4c..914cd8533e19d5b8a9083e5fdbf7d6efd2ac7b70 100644
--- a/qemu/tests/virtio_console.py
+++ b/qemu/tests/virtio_console.py
@@ -299,10 +299,15 @@ def run_virtio_console(test, params, env):
     @error.context_aware
     def test_sigio():
         """
-        Test whether port use generates sigio signals correctly.
+        Test whether virtio port generates sigio signals correctly.
         @param cfg: virtio_console_params - which type of virtio port to test
         @param cfg: virtio_port_spread - how many devices per virt pci (0=all)
         """
+        # When the GW is already running and the thread only connects,
+        # every signal destroys the daemon. Fresh start solves the problem.
+        error.context("Reloading the GuestWorker before sigio test.",
+                      logging.info)
+        test_delete_guest_script()
         (vm, guest_worker, port) = get_vm_with_single_port(
                                         params.get('virtio_console_params'))
         if port.is_open():