diff --git a/Marlin/src/HAL/HAL_TEENSY35_36/HAL_Teensy.h b/Marlin/src/HAL/HAL_TEENSY35_36/HAL_Teensy.h
index f4de615a6de331549e1d947f0242f9ecfa3d89da..b5dfb60802e0aff71586fa3cb9ff96e1aebc8fbf 100644
--- a/Marlin/src/HAL/HAL_TEENSY35_36/HAL_Teensy.h
+++ b/Marlin/src/HAL/HAL_TEENSY35_36/HAL_Teensy.h
@@ -30,6 +30,9 @@
 // Includes
 // --------------------------------------------------------------------------
 
+// _BV is re-defined in Arduino.h
+#undef _BV
+
 #include <Arduino.h>
 
 // Redefine sq macro defined by teensy3/wiring.h