1 files changed, 2 insertions, 2 deletions
diff --git a/lib/PublicInbox/IMAP.pm b/lib/PublicInbox/IMAP.pm
index 4a7ff2f4..58a0a9e3 100644
--- a/lib/PublicInbox/IMAP.pm
+++ b/lib/PublicInbox/IMAP.pm
@@ -871,12 +871,12 @@ sub eml_index_offs_i { # PublicInbox::Eml::each_part callback
  # prepares an index for BODY[$SECTION_IDX] fetches
  sub eml_body_idx ($$) {
          my ($eml, $section_idx) = @_;
-        my $idx = $eml->{imap_all_parts} //= do {
+        my $idx = $eml->{imap_all_parts} // do {
                  my $all = {};
                  $eml->each_part(\&eml_index_offs_i, $all, 0, 1);
                  # top-level of multipart, BODY[0] not allowed (nz-number)
                  delete $all->{0};
-                $all;
+                $eml->{imap_all_parts} = $all;
          };
          $idx->{$section_idx};
  }