diff --git a/datalets/donutpie3dchart-datalet/demo/index.html b/datalets/donutpie3dchart-datalet/demo/index.html
index 2276951..2fd1635 100755
--- a/datalets/donutpie3dchart-datalet/demo/index.html
+++ b/datalets/donutpie3dchart-datalet/demo/index.html
@@ -12,7 +12,7 @@
-