diff --git a/draft-ietf-quic-transport.md b/draft-ietf-quic-transport.md
index ea3c69818a..561d58db22 100644
--- a/draft-ietf-quic-transport.md
+++ b/draft-ietf-quic-transport.md
@@ -1544,9 +1544,9 @@ Stream Data:
 
 : The bytes from the designated stream to be delivered.
 
-A STREAM frame MUST have either non-zero data length or the FIN bit set.  When
-the FIN flag is sent on an empty STREAM frame, the offset in the STREAM frame
-MUST be one greater than the last data byte sent on this stream.
+A stream frame's payload MUST NOT be empty, unless the FIN bit is set.  When the
+FIN flag is sent on an empty STREAM frame, the offset in the STREAM frame MUST
+be one greater than the last data byte sent on this stream.
 
 Stream multiplexing is achieved by interleaving STREAM frames from multiple
 streams into one or more QUIC packets.  A single QUIC packet can include