my($op, $cx) = @_;
# skip pushmark if it exists (readpipe() vs ``)
my $child = $op->first->sibling->isa('B::NULL')
- ? $op->first->first : $op->first->sibling;
+ ? $op->first : $op->first->sibling;
return single_delim("qx", '`', $self->dq($child));
}