diff --git a/rules/Transform/Rector/StaticCall/StaticCallToNewRector.php b/rules/Transform/Rector/StaticCall/StaticCallToNewRector.php
index 4ad2b332d46..4e9f545245e 100644
--- a/rules/Transform/Rector/StaticCall/StaticCallToNewRector.php
+++ b/rules/Transform/Rector/StaticCall/StaticCallToNewRector.php
@@ -13,6 +13,7 @@
 use Rector\Transform\ValueObject\StaticCallToNew;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\ConfiguredCodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
+use Webmozart\Assert\Assert;
 
 /**
  * @changelog https://github.com/symfony/symfony/pull/35308
@@ -101,6 +102,7 @@ public function refactor(Node $node): ?Node
     public function configure(array $configuration): void
     {
         $staticCallsToNews = $configuration[self::STATIC_CALLS_TO_NEWS] ?? [];
+        Assert::allIsAOf($staticCallsToNews, StaticCallToNew::class);
         $this->staticCallsToNews = $staticCallsToNews;
     }
 }