diff --git a/src/EloquentBuilderTrait.php b/src/EloquentBuilderTrait.php
index 4df1d12..f0a9aa1 100644
--- a/src/EloquentBuilderTrait.php
+++ b/src/EloquentBuilderTrait.php
@@ -103,7 +103,7 @@ protected function applyFilterGroups(Builder $queryBuilder, array $filterGroups
      * @param bool|false $or
      * @param array $joins
      */
-    protected function applyFilter(Builder $queryBuilder, array $filter, $or = false, array &$joins)
+    protected function applyFilter(Builder $queryBuilder, array $filter, $or, array &$joins)
     {
         // Destructure Shorthand Filtering Syntax if filter is Shorthand
         if (! array_key_exists('key', $filter) && count($filter) >= 3) {