diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index d7eb982dc57..5c6429cc022 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -1183,7 +1183,7 @@ class ProcessTestCase(BaseTestCase):
                 msvcrt.CrtSetReportFile(report_type, msvcrt.CRTDBG_FILE_STDERR)
 
             try:
-                subprocess.Popen([cmd],
+                subprocess.Popen(cmd,
                                  stdout=subprocess.PIPE,
                                  stderr=subprocess.PIPE)
             except OSError: