diff --git a/main/ZgatewayBT.ino b/main/ZgatewayBT.ino
index b28689f..91140de 100644
--- a/main/ZgatewayBT.ino
+++ b/main/ZgatewayBT.ino
@@ -138,7 +138,7 @@ void MiFloraDiscovery(char* mac) {
 #    define MiFloraparametersCount 4
   Log.trace(F("MiFloraDiscovery" CR));
   char* MiFlorasensor[MiFloraparametersCount][8] = {
-      {"sensor", "MiFlora-lux", mac, "illuminance", jsonLux, "", "", "lu"},
+      {"sensor", "MiFlora-lux", mac, "illuminance", jsonLux, "", "", "lx"},
       {"sensor", "MiFlora-tem", mac, "temperature", jsonTemp, "", "", "°C"},
       {"sensor", "MiFlora-fer", mac, "", jsonFer, "", "", "µS/cm"},
       {"sensor", "MiFlora-moi", mac, "", jsonMoi, "", "", "%"}
@@ -153,7 +153,7 @@ void VegTrugDiscovery(char* mac) {
 #    define VegTrugparametersCount 4
   Log.trace(F("VegTrugDiscovery" CR));
   char* VegTrugsensor[VegTrugparametersCount][8] = {
-      {"sensor", "VegTrug-lux", mac, "illuminance", jsonLux, "", "", "lu"},
+      {"sensor", "VegTrug-lux", mac, "illuminance", jsonLux, "", "", "lx"},
       {"sensor", "VegTrug-tem", mac, "temperature", jsonTemp, "", "", "°C"},
       {"sensor", "VegTrug-fer", mac, "", jsonFer, "", "", "µS/cm"},
       {"sensor", "VegTrug-moi", mac, "", jsonMoi, "", "", "%"}
diff --git a/main/ZmqttDiscovery.ino b/main/ZmqttDiscovery.ino
index a7b5b22..d843531 100644
--- a/main/ZmqttDiscovery.ino
+++ b/main/ZmqttDiscovery.ino
@@ -222,7 +222,7 @@ void pubMqttDiscovery() {
 #    define BH1750parametersCount 3
   Log.trace(F("BH1750Discovery" CR));
   char* BH1750sensor[BH1750parametersCount][8] = {
-      {"sensor", "lux", "BH1750", "illuminance", jsonLux, "", "", "lu"},
+      {"sensor", "lux", "BH1750", "illuminance", jsonLux, "", "", "lx"},
       {"sensor", "ftCd", "BH1750", "", jsonFtcd, "", "", ""},
       {"sensor", "wattsm2", "BH1750", "", jsonWm2, "", "", "wm²"}
       //component type,name,availability topic,device class,value template,payload on, payload off, unit of measurement
@@ -243,7 +243,7 @@ void pubMqttDiscovery() {
 #    define TSL2561parametersCount 3
   Log.trace(F("TSL2561Discovery" CR));
   char* TSL2561sensor[TSL2561parametersCount][8] = {
-      {"sensor", "lux", "TSL2561", "illuminance", jsonLux, "", "", "lu"},
+      {"sensor", "lux", "TSL2561", "illuminance", jsonLux, "", "", "lx"},
       {"sensor", "ftcd", "TSL2561", "", jsonFtcd, "", "", ""},
       {"sensor", "wattsm2", "TSL2561", "", jsonWm2, "", "", "wm²"}
       //component type,name,availability topic,device class,value template,payload on, payload off, unit of measurement