 			char idx = ts_by_display(cTempDisplay[k]);
 			if (idx > -1) {
 				log_file.print(temp_sensor[idx].temp[0], DEC);
-				log_file.print(cpoint);
+				log_file.print(ccomma);
 				log_file.print(temp_sensor[idx].temp[1], DEC);
 				log_file.print(csemicolon);
 				log_file.print(temp_sensor[idx].temp[2], DEC);

	if (log_file) {
		#ifdef USE_RTC
		log_file.print(now.year());
		log_file.print(cpoint);
		log_file.print(now.month());
		log_file.print(cpoint);
		log_file.print(now.day());
		log_file.print(cspace);
		log_file.print(now.hour());

	byte tmp2;
	
	#ifdef USE_RTC
	write_long(now.year(), cminus);
	write_long(now.month(), cminus);
	write_long(now.day(), cspace);
	write_long(now.hour(), ccolon);
	write_long(now.minute(), ccolon);
