diff --git a/src/proto/digraph.pro b/src/proto/digraph.pro
index 3b4fe87..8a6566c 100644
--- a/src/proto/digraph.pro
+++ b/src/proto/digraph.pro
@@ -2,15 +2,15 @@
 int do_digraph(int c);
 char_u *get_digraph_for_char(int val_arg);
 int get_digraph(int cmdline);
-int getdigraph(int char1, int char2, int meta_char);
+int digraph_get(int char1, int char2, int meta_char);
 int check_digraph_chars_valid(int char1, int char2);
 void putdigraph(char_u *str);
 void listdigraphs(int use_headers);
-void getdigraphlist_common(int list_all, typval_T *rettv);
-void f_getdigraph(typval_T *argvars, typval_T *rettv);
-void f_getdigraphlist(typval_T *argvars, typval_T *rettv);
-void f_setdigraph(typval_T *argvars, typval_T *rettv);
-void f_setdigraphlist(typval_T *argvars, typval_T *rettv);
+void digraph_getlist_common(int list_all, typval_T *rettv);
+void f_digraph_get(typval_T *argvars, typval_T *rettv);
+void f_digraph_getlist(typval_T *argvars, typval_T *rettv);
+void f_digraph_set(typval_T *argvars, typval_T *rettv);
+void f_digraph_setlist(typval_T *argvars, typval_T *rettv);
 char *keymap_init(void);
 void ex_loadkeymap(exarg_T *eap);
 void keymap_clear(garray_T *kmap);