1 files changed, 2 insertions, 2 deletions
diff --git a/program/lib/Roundcube/rcube_imap_generic.php b/program/lib/Roundcube/rcube_imap_generic.php
index 4cb61e95d..709433041 100644
--- a/program/lib/Roundcube/rcube_imap_generic.php
+++ b/program/lib/Roundcube/rcube_imap_generic.php
@@ -1854,8 +1854,8 @@ class rcube_imap_generic
                         $result[$id] = '';
                     }
                 } else if ($mode == 2) {
-                    if (preg_match('/(UID|RFC822\.SIZE) ([0-9]+)/', $line, $matches)) {
-                        $result[$id] = trim($matches[2]);
+                    if (preg_match('/' . $index_field . ' ([0-9]+)/', $line, $matches)) {
+                        $result[$id] = trim($matches[1]);
                     } else {
                         $result[$id] = 0;
                     }