diff --git a/lib/SvelteUi/app/translations.json b/lib/SvelteUi/app/translations.json
index 27239af6..43ae0915 100644
--- a/lib/SvelteUi/app/translations.json
+++ b/lib/SvelteUi/app/translations.json
@@ -324,6 +324,7 @@
             "-51" : "Authentication failed",
             "-52" : "Decryption failed",
             "-53" : "Encryption key invalid",
+            "89" : "Unrecognized data received from meter",
             "90" : "No HAN data received for at least 30s",
             "91" : "Serial break",
             "92" : "Serial buffer full",
diff --git a/src/AmsToMqttBridge.cpp b/src/AmsToMqttBridge.cpp
index 988a9c70..84418300 100644
--- a/src/AmsToMqttBridge.cpp
+++ b/src/AmsToMqttBridge.cpp
@@ -46,6 +46,7 @@ ADC_MODE(ADC_VCC);
 #define METER_PARSER_PULSE 2
 #define METER_PARSER_KAMSTRUP 9
 
+#define METER_ERROR_UNKNOWN_DATA 89
 #define METER_ERROR_NO_DATA 90
 #define METER_ERROR_BREAK 91
 #define METER_ERROR_BUFFER 92
@@ -1345,6 +1346,8 @@ bool readHanPort() {
 	if(data != NULL) {
 		if(data->getListType() > 0) {
 			handleDataSuccess(data);
+		} else {
+			meterState.setLastError(METER_ERROR_UNKNOWN_DATA);
 		}
 		delete data;
 	}