diff --git a/tools/test.py b/tools/test.py
index 9a66e627a8..d3c24e2b0c 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -455,7 +455,6 @@ def RunProcess(context, timeout, args, **rest):
   popen_args = args
   prev_error_mode = SEM_INVALID_VALUE;
   if utils.IsWindows():
-    popen_args = '"' + subprocess.list2cmdline(args) + '"'
     if context.suppress_dialogs:
       # Try to change the error mode to avoid dialogs on fatal errors. Don't
       # touch any existing error mode flags by merging the existing error mode.