lib/PublicInbox/GitHTTPBackend.pm | 2 +-

diff --git a/lib/PublicInbox/GitHTTPBackend.pm b/lib/PublicInbox/GitHTTPBackend.pm
index c84eefcfa3ac15a9e366a0a3d4f8136c3d6f0d3c..50bb4331f5aaaa017b21d846fdbd040d32d0ca79 100644
--- a/lib/PublicInbox/GitHTTPBackend.pm
+++ b/lib/PublicInbox/GitHTTPBackend.pm
@@ -73,7 +73,7 @@ 		my $buf;
 		my $n = 8192;
 		while ($len > 0) {
 			$n = $len if $len < $n;
-			my $r = read($in, $buf, $n);
+			my $r = sysread($in, $buf, $n);
 			last if (!defined($r) || $r <= 0);
 			$len -= $r;
 			$fh->write($buf);