diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index 8d91927..1e41f9e 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -299,7 +299,7 @@
         # On Windows a spawn* /path/ with embedded spaces shouldn't be quoted,
         # but an arg with embedded spaces should be decorated with double
         # quotes on each end
-        if sys.platform in ('win32'):
+        if sys.platform in ('win32',):
             decorated = '"%s"' % sys.executable
             tester = '"%s"' % tester
         else: