struct option builtin_checkout_index_options[] = {
                OPT_BOOLEAN('a', "all", &all,
                        "checks out all files in the index"),
-               OPT_BOOLEAN('f', "force", &force,
-                       "forces overwrite of existing files"),
-               OPT__QUIET(&quiet),
+               OPT__FORCE(&force, "forces overwrite of existing files"),
+               OPT__QUIET(&quiet,
+                       "no warning for existing files and files not in index"),
                OPT_BOOLEAN('n', "no-create", ¬_new,
                        "don't checkout new files"),
                { OPTION_CALLBACK, 'u', "index", &newfd, NULL,
                OPT_END()
        };
 
+       if (argc == 2 && !strcmp(argv[1], "-h"))
+               usage_with_options(builtin_checkout_index_usage,
+                                  builtin_checkout_index_options);
        git_config(git_default_config, NULL);
        state.base_dir = "";
        prefix_length = prefix ? strlen(prefix) : 0;