diff --git a/src/Illuminate/Database/Eloquent/Builder.php b/src/Illuminate/Database/Eloquent/Builder.php
index 4035f93e9094..586ced5db12a 100755
--- a/src/Illuminate/Database/Eloquent/Builder.php
+++ b/src/Illuminate/Database/Eloquent/Builder.php
@@ -389,7 +389,7 @@ public function chunk($count, callable $callback)
      * @param  int  $count
      * @param  callable  $callback
      * @param  string  $column
-     * @param  string  $alias  Alias of the ID column if there are multiple columns with the same name. The alias must be defined in a select statement.
+     * @param  string  $alias
      * @return bool
      */
     public function chunkById($count, callable $callback, $column = null, $alias = null)