diff --git a/.vscode/arduino.json b/.vscode/arduino.json
index e8e6b14..0ca9fe3 100644
--- a/.vscode/arduino.json
+++ b/.vscode/arduino.json
@@ -1,6 +1,6 @@
 {
     "board": "bsfrance:avr:lora32u4",
     "sketch": "crossbow/crossbow.ino",
-    "port": "COM7",
+    "port": "COM5",
     "output": "../build"
 }
\ No newline at end of file
diff --git a/crossbow/config.h b/crossbow/config.h
index 97b7f04..cfb4482 100644
--- a/crossbow/config.h
+++ b/crossbow/config.h
@@ -15,8 +15,8 @@
  * DEVICE_MODE_TX
  * DEVICE_MODE_RX
  */
-// #define DEVICE_MODE_TX
-#define DEVICE_MODE_RX
+#define DEVICE_MODE_TX
+// #define DEVICE_MODE_RX
 
 // #define FEATURE_TX_OLED
 // #define FORCE_TX_WITHOUT_INPUT
diff --git a/crossbow/qsp.cpp b/crossbow/qsp.cpp
index 1c2e4e7..90a8186 100644
--- a/crossbow/qsp.cpp
+++ b/crossbow/qsp.cpp
@@ -157,7 +157,7 @@ void qspClearPayload(QspConfiguration_t *qsp)
 void qspInitCrc(QspConfiguration_t *qsp) {
     qsp->crc = 0;
     for (uint8_t i = 0; i < 4; i++) {
-        qspComputeCrc(qsp, qsp->bindKey);
+        qspComputeCrc(qsp, qsp->bindKey[i]);
     }
 }