diff --git a/src/ApplicationStrategy.php b/src/ApplicationStrategy.php
index 6288c45..6b70f5a 100644
--- a/src/ApplicationStrategy.php
+++ b/src/ApplicationStrategy.php
@@ -43,7 +43,7 @@ class ApplicationStrategy extends Strategy\ApplicationStrategy {
 
             public function throw404(ServerRequestInterface $request) : ResponseInterface
             {
-                if ( getenv('DEBUG') && class_exists(\Picea\Asset\Asset::class) ) {
+                if ( getenv('DEBUG') && $this->di->has(\Picea\Asset\Asset::class) ) {
                     $params = $request->getServerParams();
 
                     $scpName = basename(explode('?', $params['REQUEST_URI'] ?? "", 2)[0]);