diff --git a/packages/core/functions-js/src/FunctionsClient.ts b/packages/core/functions-js/src/FunctionsClient.ts
index 0fea192bc..99b854817 100644
--- a/packages/core/functions-js/src/FunctionsClient.ts
+++ b/packages/core/functions-js/src/FunctionsClient.ts
@@ -120,7 +120,10 @@ export class FunctionsClient {
       let data: any
       if (responseType === 'application/json') {
         data = await response.json()
-      } else if (responseType === 'application/octet-stream') {
+      } else if (
+        responseType === 'application/octet-stream' ||
+        responseType === 'application/pdf'
+      ) {
         data = await response.blob()
       } else if (responseType === 'text/event-stream') {
         data = response