diff --git a/FormDocumentManager.cs b/FormDocumentManager.cs
index 1c21f81..77e451b 100644
--- a/FormDocumentManager.cs
+++ b/FormDocumentManager.cs
@@ -349,7 +349,7 @@
                 st = myrp.GetResponseStream();
                 so = new System.IO.FileStream(filename, System.IO.FileMode.Create);
                 long totalDownloadedByte = 0;
-                byte[] by = new byte[1024];
+                byte[] by = new byte[1024000];
                 int osize = st.Read(by, 0, (int)by.Length);
                 while (osize > 0)
                 {