diff --git a/test/demo/basic.html b/test/demo/basic.html
index 48506a42..19572b86 100644
--- a/test/demo/basic.html
+++ b/test/demo/basic.html
@@ -24,7 +24,7 @@
             // debugMode: true,
             id: "contentDiv",
             prefixUrl: "../../build/openseadragon/images/",
-            tileSources: "../data/testpattern.dzisn't",
+            tileSources: "../data/testpattern.dzi",
             showNavigator:true
         });