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-rw-r--r--lib/PublicInbox/SearchMsg.pm1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/PublicInbox/SearchMsg.pm b/lib/PublicInbox/SearchMsg.pm
index e3a04605..8c55c929 100644
--- a/lib/PublicInbox/SearchMsg.pm
+++ b/lib/PublicInbox/SearchMsg.pm
@@ -141,6 +141,7 @@ sub mini_mime {
                 'X-PI-TS' => $self->ts,
         );
         if (my $refs = $self->{references_sorted}) {
+                $refs =~ s/></> </g;
                 push @h, References => $refs;
         }
         my $mime = Email::MIME->create(header_str => \@hs, header => \@h);