diff --git a/src/proto/memline.pro b/src/proto/memline.pro
index 4e0382a..1ebd7eb 100644
--- a/src/proto/memline.pro
+++ b/src/proto/memline.pro
@@ -26,6 +26,6 @@
 void ml_clearmarked __ARGS((void));
 char_u *get_file_in_dir __ARGS((char_u *fname, char_u *dname));
 void ml_setflags __ARGS((buf_T *buf));
-long ml_find_line_or_offset __ARGS((buf_T *buf, linenr_T line, long *offp));
+long ml_find_line_or_offset __ARGS((buf_T *buf, linenr_T lnum, long *offp));
 void goto_byte __ARGS((long cnt));
 /* vim: set ft=c : */