diff --git a/tools/packaging/test262.py b/tools/packaging/test262.py
index 496f4cdfe707be5836bd003477a84fabf977b3ee..7df05fa88859e90588ac6b5e1837f091e9fbecf3 100755
--- a/tools/packaging/test262.py
+++ b/tools/packaging/test262.py
@@ -229,7 +229,7 @@ class TestCase(object):
 
   def Execute(self, command):
     if IsWindows():
-      args = '"%s"' % command
+      args = '%s' % command
     else:
       args = command.split(" ")
     stdout = TempFile(prefix="test262-out-")