diff --git a/lisp/apropos.el b/lisp/apropos.el
index 023ba4bb202..0a1bc7b8583 100644
--- a/lisp/apropos.el
+++ b/lisp/apropos.el
@@ -681,7 +681,8 @@ the output includes key-bindings of commands."
       (apropos-symbols-internal
        symbols apropos-do-all
        (concat
-        (format "Library `%s' provides: %s\nand requires: %s"
+        (format (substitute-command-keys
+                 "Library `%s' provides: %s\nand requires: %s")
                 file
                 (mapconcat 'apropos-library-button
                            (or provides '(nil)) " and ")