diff --git a/IkiWiki/Plugin/httpauth.pm b/IkiWiki/Plugin/httpauth.pm
index 127c321f0..a18f8ca54 100644
--- a/IkiWiki/Plugin/httpauth.pm
+++ b/IkiWiki/Plugin/httpauth.pm
@@ -9,6 +9,8 @@ use IkiWiki 3.00;
 sub import {
 	hook(type => "getsetup", id => "httpauth", call => \&getsetup);
 	hook(type => "auth", id => "httpauth", call => \&auth);
+	hook(type => "canedit", id => "httpauth", call => \&canedit,
+		last => 1);
 }
 
 sub getsetup () {
@@ -33,9 +35,21 @@ sub auth ($$) {
 	if (defined $cgi->remote_user()) {
 		$session->param("name", $cgi->remote_user());
 	}
-	elsif (defined $config{cgiauthurl}) {
-		IkiWiki::redirect($cgi, $config{cgiauthurl}.'?'.$cgi->query_string());
-		exit;
+}
+
+sub canedit ($$$) {
+	my $page=shift;
+	my $cgi=shift;
+	my $session=shift;
+
+	if (! defined $cgi->remote_user() && defined $config{cgiauthurl}) {
+		return sub {
+			IkiWiki::redirect($cgi, $config{cgiauthurl}.'?'.$cgi->query_string());
+			exit;
+		};
+	}
+	else {
+		return undef;
 	}
 }