diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index 924b57ab21..764f0a5380 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -301,7 +301,7 @@ sub set_query_timer_restart
 {
 	my $self = shift;
 
-	$self->{query_timer_restart} = shift if @_;
+	$self->{query_timer_restart} = 1;
 	return $self->{query_timer_restart};
 }