diff --git a/src/ems.cpp b/src/ems.cpp
index 4d3a72943..c4d213c3d 100644
--- a/src/ems.cpp
+++ b/src/ems.cpp
@@ -1242,7 +1242,7 @@ void _process_MMPLUSStatusMessage(_EMS_RxTelegram * EMS_RxTelegram) {
 
 // 0xAB
 void _process_MMStatusMessage(_EMS_RxTelegram * EMS_RxTelegram) {
-    uint8_t hc               = 1; // fixed, for 0xAB
+    uint8_t hc               = 0; // fixed, for 0xAB
     EMS_Mixing.hc[hc].active = true;
 
     _setValue(EMS_RxTelegram, &EMS_Mixing.hc[hc].flowTemp, EMS_OFFSET_MMStatusMessage_flow_temp);