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-rw-r--r--lib/PublicInbox/V2Writable.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index 3d6f19cb..c926446c 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -1346,7 +1346,7 @@ sub index_sync {
                 my $s0 = PublicInbox::SearchIdx->new($self->{ibx}, 0, 0);
                 if (my $xdb = $s0->idx_acquire) {
                         my $n = $xdb->get_metadata('has_threadid');
-                        $xdb->set_metadata('has_threadid', 1) if $n ne '1';
+                        $xdb->set_metadata('has_threadid', '1') if $n ne '1';
                 }
                 $s0->idx_release;
                 $self->lock_release;