diff --git a/src/Service/SightEngineImageSafetyService.php b/src/Service/SightEngineImageSafetyService.php
index 957081a..ef7cfcc 100644
--- a/src/Service/SightEngineImageSafetyService.php
+++ b/src/Service/SightEngineImageSafetyService.php
@@ -19,6 +19,9 @@ readonly class SightEngineImageSafetyService implements ImageSafetyServiceInterf
     public function isValid(File $file): bool
     {
         $handle = fopen($file->getRealPath(), 'r');
+        if ($handle === false) {
+            return false;
+        }
         $response = $this->client->request('POST', 'https://api.sightengine.com/1.0/check.json', [
             'body' => [
                 'media' => $handle,
diff --git a/src/Validator/ImageSafetyValidator.php b/src/Validator/ImageSafetyValidator.php
index 8511bdc..9139fe0 100644
--- a/src/Validator/ImageSafetyValidator.php
+++ b/src/Validator/ImageSafetyValidator.php
@@ -12,10 +12,13 @@ class ImageSafetyValidator extends ConstraintValidator
     {
     }
 
-    public function validate($value, Constraint $constraint): void
+    /**
+     * @param mixed $value
+     * @param ImageSafety $constraint
+     * @return void
+     */
+    public function validate(mixed $value, Constraint $constraint): void
     {
-        /* @var ImageSafety $constraint */
-
         if (null === $value || '' === $value) {
             return;
         }