diff --git a/variants/thinknode_m4/ThinkNodeM4Board.h b/variants/thinknode_m4/ThinkNodeM4Board.h
index c05de911..c2cae54b 100644
--- a/variants/thinknode_m4/ThinkNodeM4Board.h
+++ b/variants/thinknode_m4/ThinkNodeM4Board.h
@@ -15,7 +15,7 @@ protected:
   uint8_t bat_level_percent =0;
 
 public:
-  ThinkNodeM4Board() : NRF52Board("THINKNODE_M3_OTA"), battery_serial(&Serial2) {}
+  ThinkNodeM4Board() : NRF52Board("THINKNODE_M4_OTA"), battery_serial(&Serial2) {}
   void begin();
   uint16_t getBattMilliVolts() override;
 
diff --git a/variants/thinknode_m4/variant.cpp b/variants/thinknode_m4/variant.cpp
index 7bf17bb8..fbdb08e2 100644
--- a/variants/thinknode_m4/variant.cpp
+++ b/variants/thinknode_m4/variant.cpp
@@ -10,8 +10,8 @@
 
 const uint32_t g_ADigitalPinMap[] =
 {
-  0,  // P0.00
-  1,  // P0.01
+  0xff,  // P0.00 - LFXO (do not use)
+  0xff,  // P0.01 - LFXO (do not use)
   2,  // P0.02
   3,  // P0.03
   4,  // P0.04