diff --git a/tests/playground.html b/tests/playground.html
index 4d243c52d..bfca40eb4 100644
--- a/tests/playground.html
+++ b/tests/playground.html
@@ -65,9 +65,6 @@
 <script src="../blocks/variables_dynamic.js"></script>
 <script src="../blocks/procedures.js"></script>
 <script src="blocks/test_blocks.js"></script>
-<script src="../core/theme/highcontrast.js"></script>
-<script src="../core/theme/classic.js"></script>
-<script src="../core/theme/modern.js"></script>
 
 <script>
 'use strict';