diff --git a/src/Ease/Sand.php b/src/Ease/Sand.php
index <HASH>..<HASH> 100644
--- a/src/Ease/Sand.php
+++ b/src/Ease/Sand.php
@@ -242,7 +242,7 @@ class Sand extends Molecule
      *
      * @return bool
      */
-    private function isAssoc(array $arr)
+    public function isAssoc(array $arr)
     {
         return array_keys($arr) !== range(0, count($arr) - 1);
     }
isAssoc is public function