diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 95c3df071..8a635ea36 100755
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -102,6 +102,8 @@ docpad run
 
 Docpad should now run an instance of semantic-ui.com locally you can access at `http://localhost:9778`
 
+Note that some asset files might be missing until you run `grunt build` once.
+
 ## Fixing Bugs
 
 ### Watch Script