diff --git a/src/Scalia/SphinxSearch/SphinxSearch.php b/src/Scalia/SphinxSearch/SphinxSearch.php
index d5a2434..7d5c7a9 100644
--- a/src/Scalia/SphinxSearch/SphinxSearch.php
+++ b/src/Scalia/SphinxSearch/SphinxSearch.php
@@ -59,6 +59,9 @@ public function setMatchMode($mode)
     return $this;
   }
 
+/**
+ * Originally this didn't send the ranking expression, which caused a problem 
+ */
   public function setRankingMode($mode, $rank='')
   {
     $this->_connection->setRankingMode($mode, $rank);