diff --git a/apps/backend/src/utils/certificate.ts b/apps/backend/src/utils/certificate.ts
index ea8cfb95..b9a40eb9 100644
--- a/apps/backend/src/utils/certificate.ts
+++ b/apps/backend/src/utils/certificate.ts
@@ -17,7 +17,7 @@ export interface CertificateGenerationResult {
   error?: string;
 }
 
-export const generateCertificate = async (data: TCertificateDownload):Promise<Buffer> => {
+export const generateCertificate = async (data: TCertificateDownload) => {
   const { html, styles } = generateCertificateHtml(data);
   return getCloudflarePdfBuffer(html, styles);
 };