diff --git a/nixos/lib/test-driver/Machine.pm b/nixos/lib/test-driver/Machine.pm
index 78598b3efb4..7e269b43e70 100644
--- a/nixos/lib/test-driver/Machine.pm
+++ b/nixos/lib/test-driver/Machine.pm
@@ -612,7 +612,7 @@ sub waitForX {
     my ($self, $regexp) = @_;
     $self->nest("waiting for the X11 server", sub {
         retry sub {
-            my ($status, $out) = $self->execute("journalctl -b SYSLOG_IDENTIFIER=systemd | grep 'session opened'");
+            my ($status, $out) = $self->execute("journalctl -b SYSLOG_IDENTIFIER=systemd | grep 'Reached target Current graphical'");
             return 0 if $status != 0;
             ($status, $out) = $self->execute("[ -e /tmp/.X11-unix/X0 ]");
             return 1 if $status == 0;