diff --git a/src/lisp.h b/src/lisp.h
index 268d5b64eea..38c7b8920a0 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -3102,6 +3102,7 @@ extern void syms_of_frame P_ ((void));
 /* defined in emacs.c */
 extern Lisp_Object decode_env_path P_ ((char *, char *));
 extern Lisp_Object Vinvocation_name, Vinvocation_directory;
+extern Lisp_Object Vbefore_init_time, Vafter_init_time;
 extern Lisp_Object Vinstallation_directory;
 extern Lisp_Object empty_unibyte_string, empty_multibyte_string;
 EXFUN (Fkill_emacs, 1);