diff --git a/src/proto/evalbuffer.pro b/src/proto/evalbuffer.pro
index b59c5f5..57c84ce 100644
--- a/src/proto/evalbuffer.pro
+++ b/src/proto/evalbuffer.pro
@@ -16,6 +16,7 @@
 void f_deletebufline(typval_T *argvars, typval_T *rettv);
 void f_getbufinfo(typval_T *argvars, typval_T *rettv);
 void f_getbufline(typval_T *argvars, typval_T *rettv);
+type_T *ret_f_getline(int argcount, type_T **argtypes);
 void f_getline(typval_T *argvars, typval_T *rettv);
 void f_setbufline(typval_T *argvars, typval_T *rettv);
 void f_setline(typval_T *argvars, typval_T *rettv);
diff --git a/src/proto/evalfunc.pro b/src/proto/evalfunc.pro
index 14a1a56..33dea2c 100644
--- a/src/proto/evalfunc.pro
+++ b/src/proto/evalfunc.pro
@@ -4,7 +4,7 @@
 int find_internal_func(char_u *name);
 int has_internal_func(char_u *name);
 char *internal_func_name(int idx);
-type_T *internal_func_ret_type(int idx, int argcount);
+type_T *internal_func_ret_type(int idx, int argcount, type_T **argtypes);
 int check_internal_func(int idx, int argcount);
 int call_internal_func(char_u *name, int argcount, typval_T *argvars, typval_T *rettv);
 void call_internal_func_by_idx(int idx, typval_T *argvars, typval_T *rettv);