diff --git a/src/espmega_iot_core.cpp b/src/espmega_iot_core.cpp
index 3a6d4d7..2823c34 100644
--- a/src/espmega_iot_core.cpp
+++ b/src/espmega_iot_core.cpp
@@ -752,9 +752,13 @@ void publish_env_state()
     mqtt_client.loop();
     if (lcd_current_page == 4)
     {
-      Serial.printf("roomtemp.txt=\"%.01fC\"",current_room_temp);
+      Serial.print("roomtemp.txt=\"");
+      Serial.print(current_room_temp);
+      Serial.print("C\"");
       lcd_send_stop_bit();
-      Serial.printf("roomhumid.txt=\"%d%\"",current_room_humid);
+      Serial.print("roomhumid.txt=\"");
+      Serial.print(current_room_humid);
+      Serial.print("%\"");
       lcd_send_stop_bit();
     }
     break;
@@ -819,10 +823,14 @@ void lcd_refresh()
     }
     break;
   case 4:
-      Serial.printf("roomtemp.txt=\"%.01fC\"",current_room_temp);
-      lcd_send_stop_bit();
-      Serial.printf("roomhumid.txt=\"%.01f%\"",current_room_humid);
-      lcd_send_stop_bit();
+    Serial.print("roomtemp.txt=\"");
+    Serial.print(current_room_temp);
+    Serial.print("C\"");
+    lcd_send_stop_bit();
+    Serial.print("roomhumid.txt=\"");
+    Serial.print(current_room_humid);
+    Serial.print("%\"");
+    lcd_send_stop_bit();
     if (ac_mode != 2)
       panel.writeStr("temp.txt", String(ac_temperature) + "C");
     else