diff --git a/index.php b/index.php
index e6a8243..8eddece 100644
--- a/index.php
+++ b/index.php
@@ -316,6 +316,7 @@ if (!isset($_POST['submit'])) {
             }
             if (!fileList.length) {
                 submitButton.disabled = true;
+                errorDiv.style.display = 'block';
                 errorDiv.innerHTML += 'Keine gültigen Bilder oder Videos gefunden';
             }
         });