diff --git a/src/if_lua.c b/src/if_lua.c
index d926f73..082d896 100644
--- a/src/if_lua.c
+++ b/src/if_lua.c
@@ -774,7 +774,7 @@
 {
     luaV_List *lis = luaV_checkudata(L, 1, LUAVIM_LIST);
     list_T *l = (list_T *) luaV_checkcache(L, (void *) *lis);
-    long pos = luaL_optlong(L, 3, 0);
+    long pos = (long) luaL_optinteger(L, 3, 0);
     listitem_T *li = NULL;
     typval_T v;
     if (l->lv_lock)