diff --git a/lib/tools/mqtt_core.dart b/lib/tools/mqtt_core.dart
index 887c121..e032838 100644
--- a/lib/tools/mqtt_core.dart
+++ b/lib/tools/mqtt_core.dart
@@ -131,10 +131,7 @@ class MqttCore {
 
   publishText(String subtopic, String text) {
     try {
-      var textBuffer = Uint8Buffer();
-      textBuffer.addAll(text.codeUnits);
-
-      var compressedText = GZipCodec().encode(text.codeUnits);
+      var compressedText = GZipCodec().encode(utf8.encode(text));
 
       var mqttBuffer = Uint8Buffer();
       mqttBuffer.addAll(compressedText);