diff --git a/test/wpt/testcfg.py b/test/wpt/testcfg.py
index db235699ddfe57..3c356cf474d83c 100644
--- a/test/wpt/testcfg.py
+++ b/test/wpt/testcfg.py
@@ -3,4 +3,4 @@
 import testpy
 
 def GetConfiguration(context, root):
-  return testpy.ParallelTestConfiguration(context, root, 'wpt')
+  return testpy.SimpleTestConfiguration(context, root, 'wpt')