diff --git a/arduino/arduino.ino b/arduino/arduino.ino
index 09f1a8e..392ae62 100644
--- a/arduino/arduino.ino
+++ b/arduino/arduino.ino
@@ -25,17 +25,21 @@ void loop() {
   float temp = dht.readTemperature();
   float hum = dht.readHumidity();
 
-  String tempStr = "Temperature = " + String(temp) + " °C";
-  String humStr = "Humidite = " + String(hum) + " %";
+  // Check if values are usables
+  if (isnan(temp) || isnan(hum)) {
+    Serial.println("Failed to read from DHT sensor!");
+  }
+  else {
+    String tempStr = "Temperature = " + String(temp) + " °C";
+    String humStr = "Humidite = " + String(hum) + " %";
 
-  // Send to Bluetooth
-  mySerial.println(tempStr);
-  mySerial.println(humStr);
-
-  // Show on Serial Monitor (for debugging)
-  Serial.println(tempStr);
-  Serial.println(humStr);
+    // Send to Bluetooth
+    mySerial.println(String(temp) + ";" + String(hum));
 
+    // Show on Serial Monitor (for debugging)
+    Serial.println(tempStr);
+    Serial.println(humStr);
+  }
   delay(10000);
 }