diff --git a/lib/userManual.html b/lib/userManual.html
index 31533d2..1f0e581 100644
--- a/lib/userManual.html
+++ b/lib/userManual.html
@@ -196,7 +196,7 @@ <h1>Advanced: About video formats</h1>
        For video: offer WebM and H264 encoded versions.
      </p>
      <p>
-       For audio: offer Theora and MP3 encoded versions.
+       For audio: offer Ogg and MP3 encoded versions.
      </p>
      <p>
        If you're having trouble loading a particular kind of timeline media, make sure your browser supports it. Safari won't load WebM media, for instance.