lib/PublicInbox/ViewDiff.pm | 2 +-

diff --git a/lib/PublicInbox/ViewDiff.pm b/lib/PublicInbox/ViewDiff.pm
index 0cce952d99011800e94904c80728f8911bc1278c..6b8d94372405486ca2223e0fc057e79cb24691ac 100644
--- a/lib/PublicInbox/ViewDiff.pm
+++ b/lib/PublicInbox/ViewDiff.pm
@@ -146,7 +146,7 @@ 	foreach my $s (@$diff) {
 		if ($s =~ /^---$/) {
 			to_state($dst, $state, DSTATE_STAT);
 			$$dst .= $s;
-		} elsif ($s =~ /^ /) {
+		} elsif ($s =~ /^ / || ($s =~ /^$/ && $state >= DSTATE_CTX)) {
 			# works for common cases, but not weird/long filenames
 			if ($state == DSTATE_STAT &&
 					$s =~ /^ (.+)( +\| .*\z)/s) {