diff --git a/services/nginx/app/modules/attachments/helpers/attachment.php b/services/nginx/app/modules/attachments/helpers/attachment.php
index 1eaee488..01399681 100644
--- a/services/nginx/app/modules/attachments/helpers/attachment.php
+++ b/services/nginx/app/modules/attachments/helpers/attachment.php
@@ -48,6 +48,6 @@ class attachment
 
     public function isWashCertificate(): bool
     {
-        return isset($this->content->other) && $this->content->other === 'wash_certificate';
+        return isset($this->content->other) && strtolower($this->content->other) === 'wash_certificate';
     }
 }
\ No newline at end of file