diff --git a/src/Controller/RegenerateDerivativesController.php b/src/Controller/RegenerateDerivativesController.php
index 8b16f2a..2222498 100644
--- a/src/Controller/RegenerateDerivativesController.php
+++ b/src/Controller/RegenerateDerivativesController.php
@@ -48,7 +48,7 @@ final class RegenerateDerivativesController extends ControllerBase {
     $referer = $request->headers->get('referer');
 
     $media = $this->islandoraUtils->getMediaReferencingNodeAndTerm($node, $term);
-    $media_count = count("media");
+    $media_count = count($media);
     if ($media_count == 0) {
       $status = $this->t("Derivative generation requires a media tagged Original File.");
     }