diff --git a/lib/Travelynx/Helper/HAFAS.pm b/lib/Travelynx/Helper/HAFAS.pm
index e0f4706..38bed56 100644
--- a/lib/Travelynx/Helper/HAFAS.pm
+++ b/lib/Travelynx/Helper/HAFAS.pm
@@ -85,11 +85,11 @@ sub get_json_p {
 sub get_departures_p {
 	my ( $self, %opt ) = @_;
 
-	my $when
-	  = $opt{timestamp}
-	  ? $opt{timestamp}->clone
-	  : DateTime->now( time_zone => 'Europe/Berlin' );
-	->subtract( minutes => $opt{lookbehind} );
+	my $when = (
+		  $opt{timestamp}
+		? $opt{timestamp}->clone
+		: DateTime->now( time_zone => 'Europe/Berlin' )
+	)->subtract( minutes => $opt{lookbehind} );
 	return Travel::Status::DE::HAFAS->new_p(
 		station    => $opt{eva},
 		datetime   => $when,