diff --git a/src/Configuration.php b/src/Configuration.php
index 14180ba5..0018ad9a 100644
--- a/src/Configuration.php
+++ b/src/Configuration.php
@@ -713,7 +713,7 @@ public function getHistorySize()
      */
     public function setEraseDuplicates(bool $value)
     {
-        $this->eraseDuplicates = (bool) $value;
+        $this->eraseDuplicates = $value;
     }
 
     /**