diff --git a/firmware/openbot/openbot.ino b/firmware/openbot/openbot.ino
index a7e39d48c..0734e08f2 100644
--- a/firmware/openbot/openbot.ino
+++ b/firmware/openbot/openbot.ino
@@ -49,12 +49,13 @@
 #define MTV 8        // Multi Terrain Vehicle
 #define DIY_ESP32 9  // DIY without PCB
 
+
 //------------------------------------------------------//
 // SETUP - Choose your body
 //------------------------------------------------------//
 
 // Setup the OpenBot version (DIY, PCB_V1, PCB_V2, RTR_TT, RC_CAR, LITE, RTR_TT2, RTR_520, DIY_ESP32)
-#define OPENBOT DIY
+#define OPENBOT DIY_ESP32
 
 //------------------------------------------------------//
 // SETTINGS - Global settings
@@ -592,7 +593,7 @@ class MyServerCallbacks : public BLEServerCallbacks {
 
 class MyCallbacks : public BLECharacteristicCallbacks {
   void onWrite(BLECharacteristic *pCharacteristic) {
-    std::string bleReceiver = pCharacteristic->getValue();
+    String bleReceiver = pCharacteristic->getValue();
     if (bleReceiver.length() > 0) {
       for (int i = 0; i < bleReceiver.length(); i++) {
         on_ble_rx(bleReceiver[i]);
@@ -1885,4 +1886,4 @@ void update_speed_rm() {
     counter_rm++;
   }
 }
-#endif
\ No newline at end of file
+#endif