diff --git a/src/proto/change.pro b/src/proto/change.pro
index b1aa9d5..502b285 100644
--- a/src/proto/change.pro
+++ b/src/proto/change.pro
@@ -27,7 +27,7 @@
 int del_char(int fixpos);
 int del_chars(long count, int fixpos);
 int del_bytes(long count, int fixpos_arg, int use_delcombine);
-int open_line(int dir, int flags, int second_line_indent);
+int open_line(int dir, int flags, int second_line_indent, int *did_do_comment);
 int truncate_line(int fixpos);
 void del_lines(long nlines, int undo);
 /* vim: set ft=c : */
diff --git a/src/proto/search.pro b/src/proto/search.pro
index a6843a0..27c609e 100644
--- a/src/proto/search.pro
+++ b/src/proto/search.pro
@@ -29,6 +29,7 @@
 int searchc(cmdarg_T *cap, int t_cmd);
 pos_T *findmatch(oparg_T *oap, int initc);
 pos_T *findmatchlimit(oparg_T *oap, int initc, int flags, int maxtravel);
+int check_linecomment(char_u *line);
 void showmatch(int c);
 int current_search(long count, int forward);
 int linewhite(linenr_T lnum);