static char *logmsg_reencode(const struct commit *commit,
                             const char *output_encoding)
 {
-       static const char *utf8 = "utf-8";
+       static const char *utf8 = "UTF-8";
        const char *use_encoding;
        char *encoding;
        char *out;
                    ? git_log_output_encoding
                    : git_commit_encoding);
        if (!encoding)
-               encoding = "utf-8";
+               encoding = "UTF-8";
        if (encoding_p)
                *encoding_p = encoding;
        return logmsg_reencode(commit, encoding);