diff --git a/src/macros.h b/src/macros.h
index 6c927b80b5c..3f2629c661d 100644
--- a/src/macros.h
+++ b/src/macros.h
@@ -40,6 +40,10 @@ extern int executing_macro_iterations;
 
 extern Lisp_Object executing_macro;
 
+/* Finish defining the current keyboard macro.  */
+
+extern void end_kbd_macro P_ ((void));
+
 /* Declare that all chars stored so far in the kbd macro being defined
  really belong to it.  This is done in between editor commands.  */