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-rw-r--r--lib/PublicInbox/LeiRefreshMailSync.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/LeiRefreshMailSync.pm b/lib/PublicInbox/LeiRefreshMailSync.pm
index eb842843..0cb9f3dc 100644
--- a/lib/PublicInbox/LeiRefreshMailSync.pm
+++ b/lib/PublicInbox/LeiRefreshMailSync.pm
@@ -101,7 +101,7 @@ sub _complete_refresh_mail_sync {
         my ($lei, @argv) = @_;
         my $lms = $lei->lms or return ();
         my $match_cb = $lei->complete_url_prepare(\@argv);
-        my @k = $lms->folders($argv[-1], 1);
+        my @k = $lms->folders($argv[-1] // undef, 1);
         my @m = map { $match_cb->($_) } @k;
         @m ? @m : @k
 }