strbuf_addf(&buffer, "parent %s\n", sha1_to_hex(parent_sha1[i]));
 
        /* Person/date information */
-       strbuf_addf(&buffer, "author %s\n", git_author_info(1));
-       strbuf_addf(&buffer, "committer %s\n", git_committer_info(1));
+       strbuf_addf(&buffer, "author %s\n", git_author_info(IDENT_ERROR_ON_NO_NAME));
+       strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
        if (!encoding_is_utf8)
                strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding);
        strbuf_addch(&buffer, '\n');