diff --git a/src/Symfony/Component/Asset/VersionStrategy/JsonManifestVersionStrategy.php b/src/Symfony/Component/Asset/VersionStrategy/JsonManifestVersionStrategy.php
index e72cdc1f174a6..256bc21963720 100644
--- a/src/Symfony/Component/Asset/VersionStrategy/JsonManifestVersionStrategy.php
+++ b/src/Symfony/Component/Asset/VersionStrategy/JsonManifestVersionStrategy.php
@@ -39,7 +39,7 @@ public function __construct(string $manifestPath, HttpClientInterface $httpClien
         $this->manifestPath = $manifestPath;
         $this->httpClient = $httpClient;
 
-        if (null === $this->httpClient && 0 === strpos(parse_url($this->manifestPath, \PHP_URL_SCHEME), 'http')) {
+        if (null === $this->httpClient && ($scheme = parse_url($this->manifestPath, \PHP_URL_SCHEME)) && 0 === strpos($scheme, 'http')) {
             throw new \LogicException(sprintf('The "%s" class needs an HTTP client to use a remote manifest. Try running "composer require symfony/http-client".', self::class));
         }
     }