diff --git a/src/proto/charset.pro b/src/proto/charset.pro
index a747319..a4f6c45 100644
--- a/src/proto/charset.pro
+++ b/src/proto/charset.pro
@@ -61,6 +61,7 @@
 int vim_toupper(int c);
 int vim_tolower(int c);
 char_u *skiptowhite(char_u *p);
+char_u *skiptowhite_or_nl(char_u *p);
 char_u *skiptowhite_esc(char_u *p);
 long getdigits(char_u **pp);
 long getdigits_quoted(char_u **pp);