diff --git a/src/evalfunc.c b/src/evalfunc.c
index e670381..d8c621d 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -957,6 +957,11 @@
     return &t_func_any;
 }
     static type_T *
+ret_func_unknown(int argcount UNUSED, type_T **argtypes UNUSED)
+{
+    return &t_func_unknown;
+}
+    static type_T *
 ret_channel(int argcount UNUSED, type_T **argtypes UNUSED)
 {
     return &t_channel;
@@ -1065,8 +1070,6 @@
     return &t_string;
 }
 
-static type_T *ret_f_function(int argcount, type_T **argtypes);
-
 /*
  * Array with names and number of arguments of all internal functions
  * MUST BE KEPT SORTED IN strcmp() ORDER FOR BINARY SEARCH!
@@ -1429,9 +1432,9 @@
     {"fullcommand",	1, 1, FEARG_1,	    arg1_string,
 			ret_string,	    f_fullcommand},
     {"funcref",		1, 3, FEARG_1,	    arg3_any_list_dict,
-			ret_func_any,	    f_funcref},
+			ret_func_unknown,   f_funcref},
     {"function",	1, 3, FEARG_1,	    arg3_any_list_dict,
-			ret_f_function,	    f_function},
+			ret_func_unknown,   f_function},
     {"garbagecollect",	0, 1, 0,	    arg1_bool,
 			ret_void,	    f_garbagecollect},
     {"get",		2, 3, FEARG_1,	    arg23_get,
@@ -4170,15 +4173,6 @@
     common_function(argvars, rettv, TRUE);
 }
 
-    static type_T *
-ret_f_function(int argcount, type_T **argtypes)
-{
-    if (argcount == 1 && argtypes[0]->tt_type == VAR_STRING)
-	return &t_func_any;
-    // Need to check the type at runtime, the function may be defined later.
-    return &t_func_unknown;
-}
-
 /*
  * "function()" function
  */