diff --git a/src/proto/mbyte.pro b/src/proto/mbyte.pro
index 0e41a41..806a6c6 100644
--- a/src/proto/mbyte.pro
+++ b/src/proto/mbyte.pro
@@ -10,7 +10,6 @@
 int latin_char2bytes(int c, char_u *buf);
 int latin_ptr2len(char_u *p);
 int latin_ptr2len_len(char_u *p, int size);
-int utf_ambiguous_width(int c);
 int utf_char2cells(int c);
 int latin_ptr2cells(char_u *p);
 int utf_ptr2cells(char_u *p);
@@ -41,6 +40,7 @@
 int utf_iscomposing(int c);
 int utf_printable(int c);
 int utf_class(int c);
+int utf_ambiguous_width(int c);
 int utf_fold(int a);
 int utf_toupper(int a);
 int utf_islower(int a);