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-rw-r--r--lib/PublicInbox/MID.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/MID.pm b/lib/PublicInbox/MID.pm
index 97cf3a54..36c05855 100644
--- a/lib/PublicInbox/MID.pm
+++ b/lib/PublicInbox/MID.pm
@@ -115,7 +115,7 @@ sub uniq_mids ($;$) {
         my @ret;
         $seen ||= {};
         foreach my $mid (@$mids) {
-                $mid =~ tr/\n\t\r//d;
+                $mid =~ tr/\n\t\r\0//d;
                 if (length($mid) > MAX_MID_SIZE) {
                         warn "Message-ID: <$mid> too long, truncating\n";
                         $mid = substr($mid, 0, MAX_MID_SIZE);