diff --git a/slidenotes/notes.html b/slidenotes/notes.html
index 4b952108..5fc81ece 100644
--- a/slidenotes/notes.html
+++ b/slidenotes/notes.html
@@ -62,7 +62,7 @@
     </div>
     <div id="notes"></div>
 
-    <script src="socket.io/socket.io.js"></script>
+    <script src="/socket.io/socket.io.js"></script>
 
     <script>
     var socketId = '{{socketId}}';