diff --git a/docs/MANUAL b/docs/MANUAL
index ce617138f..da073104c 100644
--- a/docs/MANUAL
+++ b/docs/MANUAL
@@ -328,7 +328,7 @@ POST (HTTP)
   If the content-type is not specified, curl will try to guess from the file
   extension (it only knows a few), or use the previously specified type (from
   an earlier file if several files are specified in a list) or else it will
-  using the default type 'text/plain'.
+  use the default type 'application/octet-stream'.
 
   Emulate a fill-in form with -F. Let's say you fill in three fields in a
   form. One field is a file name which to post, one field is your name and one