diff --git a/src/proto/undo.pro b/src/proto/undo.pro
index 851d281..619ad70 100644
--- a/src/proto/undo.pro
+++ b/src/proto/undo.pro
@@ -18,10 +18,9 @@
 void u_unchanged(buf_T *buf);
 void u_find_first_changed(void);
 void u_update_save_nr(buf_T *buf);
-void u_clearall(buf_T *buf);
 void u_clearline(void);
 void u_undoline(void);
-void u_blockfree(buf_T *buf);
+void u_clearallandblockfree(buf_T *buf);
 int bufIsChanged(buf_T *buf);
 int anyBufIsChanged(void);
 int bufIsChangedNotTerm(buf_T *buf);