diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index ee2da1b..3fa265e 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -60,6 +60,7 @@
 int list_append_string __ARGS((list_T *l, char_u *str, int len));
 int list_insert_tv __ARGS((list_T *l, typval_T *tv, listitem_T *item));
 void list_remove __ARGS((list_T *l, listitem_T *item, listitem_T *item2));
+void list_insert __ARGS((list_T *l, listitem_T *ni, listitem_T *item));
 int garbage_collect __ARGS((void));
 void set_ref_in_ht __ARGS((hashtab_T *ht, int copyID));
 void set_ref_in_list __ARGS((list_T *l, int copyID));