diff --git a/src/buffer.h b/src/buffer.h
index bc15a0632e5..ae8e6a534d8 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -807,8 +807,6 @@ EXFUN (Fnext_overlay_change, 1);
 EXFUN (Fdelete_overlay, 1);
 
 /* Functions to call before and after each text change.  */
-extern Lisp_Object Vbefore_change_function;
-extern Lisp_Object Vafter_change_function;
 extern Lisp_Object Vbefore_change_functions;
 extern Lisp_Object Vafter_change_functions;
 extern Lisp_Object Vfirst_change_hook;