diff --git a/src/pooldose/mappings/model_PDPH1H1HAW100_FW539176.json b/src/pooldose/mappings/model_PDPH1H1HAW100_FW539176.json
index 7ded588..fe69cf2 100644
--- a/src/pooldose/mappings/model_PDPH1H1HAW100_FW539176.json
+++ b/src/pooldose/mappings/model_PDPH1H1HAW100_FW539176.json
@@ -93,7 +93,7 @@
     "key": "w_1eklfb73r",
     "type": "binary_sensor"
   },
-  "alarm_ofa_orp": {
+  "alarm_ofa2_ph": {
     "key": "w_1eklfb8ob",
     "type": "binary_sensor"
   },