diff --git a/docs/honk.3 b/docs/honk.3
index 9f4ccab..01d10c6 100644
--- a/docs/honk.3
+++ b/docs/honk.3
@@ -67,6 +67,7 @@ The
 .Fa action
 value should be
 .Dq honk .
+Content type must be multipart/form-data.
 The following values are recognized:
 .Bl -tag -width placename
 .It Fa noise
@@ -101,6 +102,7 @@ Upload just an attachment using
 .Fa donk
 and
 .Fa donkdesc .
+Content type must be multipart/form-data.
 Will return the XID.
 .Ss gethonks
 The