lib/PublicInbox/ViewDiff.pm | 3 ++-

diff --git a/lib/PublicInbox/ViewDiff.pm b/lib/PublicInbox/ViewDiff.pm
index 4669e8746f043ac7ca840f5e699cbb478a85a4ac..4d72eb4807199c272c32f133fbcbfb38e982648a 100644
--- a/lib/PublicInbox/ViewDiff.pm
+++ b/lib/PublicInbox/ViewDiff.pm
@@ -104,8 +104,9 @@ 	}
 
 	if (my $attr = to_attr($ctx->{-apfx}.$fn)) {
 		$ctx->{-anchors}->{$attr} = 1;
+		my $spaces = ($orig =~ s/( +)\z//) ? $1 : '';
 		$$dst .= " <a\nid=i$attr\nhref=#$attr>" .
-			ascii_html($orig) . '</a>'.
+			ascii_html($orig) . '</a>' . $spaces .
 			to_html($linkify, $rest);
 		return 1;
 	}