- Fix URL building - skip null parameters

1 files changed, 1 insertions, 1 deletions

diff --git a/program/include/rcmail.php b/program/include/rcmail.php
index 1c34759e6..3d5915ea5 100644
--- a/program/include/rcmail.php
+++ b/program/include/rcmail.php
@@ -1507,7 +1507,7 @@ class rcmail
     $url = './';
     $delm = '?';
     foreach (array_reverse($p) as $key => $val) {
-      if ($val !== '') {
+      if ($val !== '' && $val !== null) {
         $par = $key[0] == '_' ? $key : '_'.$key;
         $url .= $delm.urlencode($par).'='.urlencode($val);
         $delm = '&';