diff --git a/manuscript/creating-leanpub-courses.txt b/manuscript/creating-leanpub-courses.txt
index 28395b6..cbae499 100644
--- a/manuscript/creating-leanpub-courses.txt
+++ b/manuscript/creating-leanpub-courses.txt
@@ -288,9 +288,13 @@ Here is what you would type to embed a locally-stored video in your course:
 
 {type: code}
 ```
-![Short Clip from Local Video File](peter-clip.m4a)
+![Short Clip from Local Video File](peter-clip.mp4)
 ```
 
+This is how it will look like:
+
+![Short Clip from Local Video File](peter-clip.mp4)
+
 # Quiz, Exercise and Question Parameters
 
 In your course, manuscript, you can set a number of parameters to quizzes and exercies, and questions and answers.