diff --git a/src/proto/getchar.pro b/src/proto/getchar.pro
index 11a37fb..d8fcf3f 100644
--- a/src/proto/getchar.pro
+++ b/src/proto/getchar.pro
@@ -15,6 +15,7 @@
 void AppendCharToRedobuff(int c);
 void AppendNumberToRedobuff(long n);
 void stuffReadbuff(char_u *s);
+void stuffReadbuffLen(char_u *s, long len);
 void stuffRedoReadbuff(char_u *s);
 void stuffReadbuffSpec(char_u *s);
 void stuffcharReadbuff(int c);