diff --git a/doc/draft-ietf-codec-oggopus.xml b/doc/draft-ietf-codec-oggopus.xml
index 0a79693a51978281da08025b2038495bfa028704..b7e1f0cd3791468cc3bb9f268ebfcba1f238f87b 100644
--- a/doc/draft-ietf-codec-oggopus.xml
+++ b/doc/draft-ietf-codec-oggopus.xml
@@ -1245,7 +1245,7 @@ To achieve good quality in the very first samples of a stream, the Ogg encoder
  the beginning to avoid the Opus encoder having to encode a discontinuous
  signal.
 For an input file containing 'length' samples, the Ogg encoder SHOULD set the
- preskip header value to delay_samples+extra_samples, encode at least
+ pre-skip header value to delay_samples+extra_samples, encode at least
  length+delay_samples+extra_samples samples, and set the granulepos of the last
  page to length+delay_samples+extra_samples.
 This ensures that the encoded file has the same duration as the original, with
@@ -1305,7 +1305,7 @@ De-emphasis is allowed.</t>
  frame.</t>
 <t>Begin the second segment with a copy of the last frame of the first
  segment.</t>
-<t>Set the preskip value of the second stream in such a way as to properly
+<t>Set the pre-skip value of the second stream in such a way as to properly
  join the two streams.</t>
 <t>Continue the encoding process normally from there, without any reset to
  the encoder.</t>