lib/PublicInbox/WWW.pm | 1 +

diff --git a/lib/PublicInbox/WWW.pm b/lib/PublicInbox/WWW.pm
index f1f4abd5f86d517383683bb67fc989fdcd3f0c0e..d6b07bf7ff03be20db2abb3893a54c8c41fcb71f 100644
--- a/lib/PublicInbox/WWW.pm
+++ b/lib/PublicInbox/WWW.pm
@@ -48,6 +48,7 @@ 	# we don't care about multi-value
 	my %qp = map {
 		my ($k, $v) = split('=', $_, 2);
 		$v = '' unless defined $v;
+		$v =~ tr/+/ /;
 		($k, $v)
 	} split(/[&;]/, uri_unescape($env->{QUERY_STRING}));
 	$ctx->{qp} = \%qp;