diff --git a/lisp/subr.el b/lisp/subr.el
index a744cfddfd..cf7d78a442 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -5771,4 +5771,5 @@ 'flatten-list
 (defconst regexp-unmatchable "\\`a\\`"
   "Standard regexp guaranteed not to match any string at all.")
 
+(provide 'subr)
 ;;; subr.el ends here