diff --git a/src/Illuminate/Database/Connection.php b/src/Illuminate/Database/Connection.php
index 855db0d672d4..17056a9e4de0 100755
--- a/src/Illuminate/Database/Connection.php
+++ b/src/Illuminate/Database/Connection.php
@@ -106,7 +106,7 @@ class Connection implements ConnectionInterface
     /**
      * The event dispatcher instance.
      *
-     * @var \Illuminate\Contracts\Events\Dispatcher
+     * @var \Illuminate\Contracts\Events\Dispatcher|null
      */
     protected $events;
 
@@ -127,7 +127,7 @@ class Connection implements ConnectionInterface
     /**
      * The transaction manager instance.
      *
-     * @var \Illuminate\Database\DatabaseTransactionsManager
+     * @var \Illuminate\Database\DatabaseTransactionsManager|null
      */
     protected $transactionsManager;
 
@@ -865,7 +865,7 @@ public function logQuery($query, $bindings, $time = null)
     /**
      * Get the elapsed time since a given starting point.
      *
-     * @param  int  $start
+     * @param  float  $start
      * @return float
      */
     protected function getElapsedTime($start)