1 files changed, 4 insertions, 4 deletions
diff --git a/lib/PublicInbox/Msgmap.pm b/lib/PublicInbox/Msgmap.pm
index feef8ba7..3237a5ed 100644
--- a/lib/PublicInbox/Msgmap.pm
+++ b/lib/PublicInbox/Msgmap.pm
@@ -108,10 +108,10 @@ sub created_at {
  sub mid_insert {
          my ($self, $mid) = @_;
          my $dbh = $self->{dbh};
-        my $sql = 'INSERT OR IGNORE INTO msgmap (mid) VALUES (?)';
-        my $sth = $self->{mid_insert} ||= $dbh->prepare($sql);
-        $sth->bind_param(1, $mid);
-        return if $sth->execute == 0;
+        my $sth = $dbh->prepare_cached(<<'');
+INSERT OR IGNORE INTO msgmap (mid) VALUES (?)
+
+        return if $sth->execute($mid) == 0;
          $dbh->last_insert_id(undef, undef, 'msgmap', 'num');
  }