diff --git a/tests/playgrounds/advanced_playground.html b/tests/playgrounds/advanced_playground.html
index f484fe512..1aa392d8c 100644
--- a/tests/playgrounds/advanced_playground.html
+++ b/tests/playgrounds/advanced_playground.html
@@ -155,7 +155,7 @@ function initPlayground() {
     toolboxes: {
       'categories': toolboxCategories,
       'simple': toolboxSimple,
-      'test blocks': testBlocksToolbox,
+      'test blocks': toolboxTestBlocks,
     }
   }