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-rw-r--r--program/include/rcube_mdb2.php4
1 files changed, 3 insertions, 1 deletions
diff --git a/program/include/rcube_mdb2.php b/program/include/rcube_mdb2.php
index a83b463b4..86d798a79 100644
--- a/program/include/rcube_mdb2.php
+++ b/program/include/rcube_mdb2.php
@@ -330,7 +330,9 @@ class rcube_mdb2
if (!$this->db_handle || $this->db_mode=='r')
return FALSE;
- return $this->db_handle->lastInsertID($sequence);
+ $id = $this->db_handle->lastInsertID($sequence);
+
+ return $this->db_handle->isError($id) ? null : $id;
}