diff --git a/libc/stdio/findfp.c b/libc/stdio/findfp.c
index 76ed5ee..863235b 100644
--- a/libc/stdio/findfp.c
+++ b/libc/stdio/findfp.c
@@ -171,10 +171,9 @@
 #endif
 
 /*
- * exit() and abort() call _cleanup() through the callback registered
- * with __atexit_register_cleanup(), set whenever we open or buffer a
- * file. This chicanery is done so that programs that do not use stdio
- * need not link it all in.
+ * exit() calls _cleanup() through *__cleanup, set whenever we
+ * open or buffer a file.  This chicanery is done so that programs
+ * that do not use stdio need not link it all in.
  *
  * The name `_cleanup' is, alas, fairly well known outside stdio.
  */
@@ -201,7 +200,7 @@
 		_FILEEXT_SETUP(usual+i, usualext+i);
 	}
 	/* make sure we clean up on exit */
-	__atexit_register_cleanup(_cleanup); /* conservative */
+	__cleanup = _cleanup; /* conservative */
 	__sdidinit = 1;
 out:
 	_THREAD_PRIVATE_MUTEX_UNLOCK(__sinit_mutex);