diff --git a/Query/Builder.php b/Query/Builder.php
index <HASH>..<HASH> 100755
--- a/Query/Builder.php
+++ b/Query/Builder.php
@@ -996,7 +996,7 @@ class Builder
     /**
      * Add a "where null" clause to the query.
      *
-     * @param  string|array  $column
+     * @param  string|array  $columns
      * @param  string  $boolean
      * @param  bool    $not
      * @return $this
update param name in docblock