diff --git a/src/lisp.h b/src/lisp.h
index 81c5bf4dd8f..c1460739b1a 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -1531,6 +1531,7 @@ extern Lisp_Object internal_condition_case_1 ();
 extern Lisp_Object unbind_to ();
 extern void error ();
 extern Lisp_Object un_autoload ();
+extern Lisp_Object Ffetch_bytecode ();
 
 /* Defined in editfns.c */
 extern Lisp_Object Fgoto_char ();