diff --git a/Modules/Setup.thread.in b/Modules/Setup.thread.in
index 2b136c1..d532156 100644
--- a/Modules/Setup.thread.in
+++ b/Modules/Setup.thread.in
@@ -1,11 +1,12 @@
 # This file is transmogrified into Setup.thread by config.status.
 
-# Its purpose is to automatically enable the thread module when the
-# --with-thread argument is given to the configure script.
+# Its purpose is to automatically enable the thread module by default
+# unless the the --without-threads argument is given to the configure
+# script.
 
 # *NOTE*: if the configure script decides it can't support threads,
 # the thread module will still be enabled and cause compile errors.
-# The solution is not to use --with-thread on platforms that don't
+# The solution is to use --without-threads on platforms that don't
 # support threads.
 
 @USE_THREAD_MODULE@thread threadmodule.c