diff --git a/include/renderer.php b/include/renderer.php
index 7849152..2e52e19 100644
--- a/include/renderer.php
+++ b/include/renderer.php
@@ -426,7 +426,7 @@ class Renderer {
     }
     
     protected function decode(string $toDecode, string $salt): string {
-        return openssl_decrypt($toDecode, 'aes-256-cbc', $this->encryptionKey, 0, $salt);
+        return $toDecode ? openssl_decrypt($toDecode, 'aes-256-cbc', $this->encryptionKey, 0, $salt) : '';
     }