diff --git a/radio/src/opentx.h b/radio/src/opentx.h
index c1b913480..ed12239db 100644
--- a/radio/src/opentx.h
+++ b/radio/src/opentx.h
@@ -1118,7 +1118,7 @@ union ReusableBuffer
     char msg[64];
     uint8_t r9mPower;
     uint8_t pxx2_register_or_bind_step;
-    char pxx2_bind_candidate_receivers[5][8];
+    char pxx2_bind_candidate_receivers[PXX2_MAX_RECEIVERS_PER_MODULE][8];
     uint8_t pxx2_bind_candidate_receivers_count;
     uint8_t pxx2_bind_receiver_index;
   } modelsetup;
diff --git a/radio/src/pulses/pxx2.cpp b/radio/src/pulses/pxx2.cpp
index f313ccad8..67c9a11c1 100644
--- a/radio/src/pulses/pxx2.cpp
+++ b/radio/src/pulses/pxx2.cpp
@@ -75,7 +75,7 @@ void Pxx2Pulses::setupBindFrame(uint8_t module)
   addFrameType(PXX2_TYPE_C_MODULE, PXX2_TYPE_ID_BIND);
 
   if (reusableBuffer.modelsetup.pxx2_register_or_bind_step == BIND_RX_ID_SELECTED) {
-    Pxx2Transport::addByte(0x00);
+    Pxx2Transport::addByte(0x01);
     for (uint8_t i=0; i<PXX2_LEN_RX_ID; i++) {
       Pxx2Transport::addByte(g_model.moduleData[module].pxx2.receivers[reusableBuffer.modelsetup.pxx2_bind_receiver_index].rxID[i]);
     }