diff --git a/src/mqtt.cpp b/src/mqtt.cpp
index 65f47d54d..22356b6da 100644
--- a/src/mqtt.cpp
+++ b/src/mqtt.cpp
@@ -1010,6 +1010,7 @@ void Mqtt::publish_ha_sensor_config(uint8_t               type,        // EMSdev
         char uniq_s[60];
         strlcpy(uniq_s, en_name, sizeof(uniq_s));
         Helpers::replace_char(uniq_s, ' ', '_');
+        Helpers::replace_char(uniq_s, '+', '2'); //changes 'eco+_switch_off' to 'eco2_switch_off' (HA ignores '+')
         if (has_tag) {
             snprintf(uniq_id, sizeof(uniq_id), "%s_%s_%s", device_name, DeviceValue::DeviceValueTAG_s[tag][0], Helpers::toLower(uniq_s).c_str());
         } else {