diff -r 67e0384c0e63 -r cf145b35d65f bmsd/fermenters.c
--- a/bmsd/fermenters.c	Tue Jul 19 13:55:53 2022 +0200
+++ b/bmsd/fermenters.c	Fri Jul 22 12:15:05 2022 +0200
@@ -936,7 +936,7 @@
 	trigger = true;
     if (trigger) {
     	snprintf(query, 511,
-		"INSERT INTO log_fermenter SET code='%s', datetime='%s', mode='%s', stage='%s', " \
+		"INSERT IGNORE INTO log_fermenter SET code='%s', datetime='%s', mode='%s', stage='%s', " \
 		"temp_air='%.4f', temp_beer='%.4f', temp_chiller='%.4f', temp_room='%.3f', " \
 		"sp_low='%.3f', sp_high='%.3f', heater_power='%d', cooler_power='%d', " \
 		"event='%s', fermenter_uuid='%s'",