diff --git a/MysqliDb.php b/MysqliDb.php
index 4d91176f..d0d42189 100644
--- a/MysqliDb.php
+++ b/MysqliDb.php
@@ -500,8 +500,11 @@ public function getValue ($tableName, $column, $limit = 1)
         if (!$res)
             return null;
 
-        if (isset($res[0]["retval"]) && $limit == 1)
-            return $res[0]["retval"];
+        if ($limit == 1) {
+            if (isset ($res[0]["retval"]))
+                return $res[0]["retval"];
+            return null;
+        }
 
         $newRes = Array ();
         for ($i = 0; $i < $this->count; $i++)