diff --git a/src/SQLLogin/SQLLoginRequest.php b/src/SQLLogin/SQLLoginRequest.php
index 82a0b17..0f173f4 100644
--- a/src/SQLLogin/SQLLoginRequest.php
+++ b/src/SQLLogin/SQLLoginRequest.php
@@ -103,6 +103,6 @@ class SQLLoginRequest
     {
         $fields = join(',', array_merge($this->getPasswordFields(), $this->getDataFields()));
 
-        return 'SELECT '.$fields.' FROM '.$this->getTableName().' WHERE LOWER('.$this->getLoginColumnName().') = LOWER(:'.$this->getLoginColumnName().');';
+        return 'SELECT '.$fields.' FROM '.$this->getTableName().' WHERE '.$this->getLoginColumnName().' = :'.$this->getLoginColumnName().';';
     }
 }