diff --git a/DotNET/Endpoint Examples/Multipart Payload/rasterized-pdf.cs b/DotNET/Endpoint Examples/Multipart Payload/rasterized-pdf.cs
index bf503b5..30b8586 100644
--- a/DotNET/Endpoint Examples/Multipart Payload/rasterized-pdf.cs	
+++ b/DotNET/Endpoint Examples/Multipart Payload/rasterized-pdf.cs	
@@ -10,7 +10,7 @@
 
         var byteArray = File.ReadAllBytes("/path/to/file");
         var byteAryContent = new ByteArrayContent(byteArray);
-        multipartContent.Add(byteAryContent, "file", "file_name");
+        multipartContent.Add(byteAryContent, "file", "file_name.pdf");
         byteAryContent.Headers.TryAddWithoutValidation("Content-Type", "application/pdf");