diff --git a/pages/api/preview/[shortcode].ts b/pages/api/preview/[shortcode].tsx
similarity index 90%
rename from pages/api/preview/[shortcode].ts
rename to pages/api/preview/[shortcode].tsx
index 12056dc1..e8ec073c 100644
--- a/pages/api/preview/[shortcode].ts
+++ b/pages/api/preview/[shortcode].tsx
@@ -14,7 +14,7 @@ export default async function handler(
   try {
     const response = await axios({
       method: 'GET',
-      url: `${process.env.API_URL}/api/v1/parties/${shortcode}/preview`,
+      url: `${process.env.NEXT_PUBLIC_SIERO_API_URL}/parties/${shortcode}/preview`,
       responseType: 'arraybuffer',
       headers: {
         Accept: 'image/png',