diff --git a/docs/clipboard.rst b/docs/clipboard.rst
index a0dba2d5c..260da3c31 100644
--- a/docs/clipboard.rst
+++ b/docs/clipboard.rst
@@ -47,7 +47,7 @@ The terminal emulator will reply with a sequence of escape codes of the form::
 
 Here, the ``status=DATA`` packets deliver the data (as base64 encoded bytes)
 associated with each MIME type. The terminal emulator should chunk up the data
-for an individual type. A recommended size for each chunk is 4096 bytes. All
+for an individual type, into chunks of size **no more** than 4096 bytes. All
 the chunks for a given type must be transmitted sequentially and only once they
 are done the chunks for the next type, if any, should be sent. The end of data
 is indicated by a ``status=DONE`` packet.