diff --git a/doc/draft-ietf-codec-oggopus.xml b/doc/draft-ietf-codec-oggopus.xml
index 25f7101d653c480723b23cdbdbffc1d698e36242..5d2d342bafe862ed817a2a2e337495c510bc6d50 100644
--- a/doc/draft-ietf-codec-oggopus.xml
+++ b/doc/draft-ietf-codec-oggopus.xml
@@ -329,8 +329,8 @@ At 0.6 kbps, this is still a minimal bitrate impact over a naive, low quality
 </t>
 
 <t>
-Since medium-band audio is only supported in the SILK modes, wideband frames
- SHOULD be generated if switching from it to CELT modes, to ensure that
+Since medium-band audio is only supported in the SILK mode, wideband frames
+ SHOULD be generated if switching from it to CELT mode, to ensure that
  any PLC implementation that does try to migrate state between the modes
  will be able to preserve all of the available audio bandwidth.
 </t>