diff --git a/ports/samd/mcu/samd51/mpconfigmcu.h b/ports/samd/mcu/samd51/mpconfigmcu.h
index 5ac431b297..0598c353d6 100644
--- a/ports/samd/mcu/samd51/mpconfigmcu.h
+++ b/ports/samd/mcu/samd51/mpconfigmcu.h
@@ -7,6 +7,9 @@
 #define MICROPY_EMIT_THUMB              (1)
 #define MICROPY_EMIT_INLINE_THUMB       (1)
 
+// Python internal features
+#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF  (1)
+
 #define MICROPY_FLOAT_IMPL              (MICROPY_FLOAT_IMPL_FLOAT)
 
 #ifndef MICROPY_PY_BUILTINS_COMPLEX