diff --git a/README.md b/README.md
index b46bfd795b36cfac1e7f785efc8bb361908c7bca..b0330a0b382c12cd0ba188ac1f988dc9cf89cb30 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ We have built a very small example app that contains first `FirstController` and
 
 **If the following movie doesn't play for you, click on the *navPre.mp4* file above**
 
-![demo movie](https://sedna.cs.umd.edu:436clips/navPre.mp4)
+![demo movie](https://sedna.cs.umd.edu/436clips/navPre.mp4)
 
 The way this is intended to work is:
 - The FirstController has a label that says "nothing yet".