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-rw-r--r--lib/PublicInbox/HTTP.pm4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/PublicInbox/HTTP.pm b/lib/PublicInbox/HTTP.pm
index a5c56e25..68c3b788 100644
--- a/lib/PublicInbox/HTTP.pm
+++ b/lib/PublicInbox/HTTP.pm
@@ -169,8 +169,8 @@ sub response_header_write {
 
         my $conn = $env->{HTTP_CONNECTION} || '';
         my $alive = (defined($len) || $chunked) &&
-                        ($proto eq 'HTTP/1.1' && $conn !~ /\bclose\b/i) ||
-                        ($conn =~ /\bkeep-alive\b/i);
+                        (($proto eq 'HTTP/1.1' && $conn !~ /\bclose\b/i) ||
+                         ($conn =~ /\bkeep-alive\b/i));
 
         $h .= 'Connection: ' . ($alive ? 'keep-alive' : 'close');
         $h .= "\r\nDate: " . http_date() . "\r\n\r\n";