1 files changed, 1 insertions, 1 deletions
diff --git a/lib/mysql.php b/lib/mysql.php
index 0d5a66b..b169f1a 100644
--- a/lib/mysql.php
+++ b/lib/mysql.php
@@ -247,7 +247,7 @@ namespace {
             }
 
             $row = mysql_fetch_array($result);
-            if ($found && isset($row[$field])) {
+            if ($found && array_key_exists($field, $row)) {
                 return $row[$field];
             }