diff --git a/src/Leanetec.EConnect.Infrastructure/EConnectClient.cs b/src/Leanetec.EConnect.Infrastructure/EConnectClient.cs
index e4e2065..5a77a07 100644
--- a/src/Leanetec.EConnect.Infrastructure/EConnectClient.cs
+++ b/src/Leanetec.EConnect.Infrastructure/EConnectClient.cs
@@ -130,20 +130,21 @@ public class EConnectClient<TError> : IEConnectClient<TError> where TError :  cl
     {
         route = AddQueryString(route, queryParams);
 
-        // Create multipart form data content
-        using var content = new MultipartFormDataContent();
-
-        // add file with Stream and fileName
-        content.Add(new StreamContent(stream), "file", fileName);
-
-        // add file type
-        content.Headers.ContentType = new MediaTypeHeaderValue("multipart/form-data");
-
         // create message and add accept header
         using var message = new HttpRequestMessage(HttpMethod.Post, route);
         message.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("*/*"));
 
-        message.Content = content;
+        // add file type
+        var fileContent = new StreamContent(stream);
+        fileContent.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
+
+        // Create multipart form data form
+        using var form = new MultipartFormDataContent
+        {
+            { fileContent, "file", fileName }
+        };
+
+        message.Content = form;
 
         var res = await Http.SendAsync(message, cancel);