diff --git a/Model/Plugin/Currency.php b/Model/Plugin/Currency.php
index be9cb03..cf5095c 100644
--- a/Model/Plugin/Currency.php
+++ b/Model/Plugin/Currency.php
@@ -20,7 +20,7 @@ public function beforeToCurrency(
         ...$arguments
     ) {
         if ($this->getConfig()->isEnable()) {
-            $arguments[1]['precision'] = $subject->getPricePrecision();
+            $arguments[1]['precision'] = (int) $subject->getPricePrecision();
         }
         return $arguments;
     }