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-rw-r--r--program/include/rcube_user.inc3
1 files changed, 3 insertions, 0 deletions
diff --git a/program/include/rcube_user.inc b/program/include/rcube_user.inc
index 20c8dd827..47e74620a 100644
--- a/program/include/rcube_user.inc
+++ b/program/include/rcube_user.inc
@@ -242,6 +242,9 @@ class rcube_user
if (!$this->ID)
return false;
+ if (!$this->ID || $this->ID == '')
+ return false;
+
$sql_result = $DB->query("SELECT count(*) AS ident_count FROM " .
get_table_name('identities') .
" WHERE user_id = ? AND del != 1",