diff --git a/cores/asr6601/asr6601.a b/cores/asr6601/asr6601.a
index 60bfd413..a6922d24 100644
Binary files a/cores/asr6601/asr6601.a and b/cores/asr6601/asr6601.a differ
diff --git a/cores/asr6601/drivers/peripheral/inc/tremo_i2c.h b/cores/asr6601/drivers/peripheral/inc/tremo_i2c.h
index f319a811..1711aaed 100644
--- a/cores/asr6601/drivers/peripheral/inc/tremo_i2c.h
+++ b/cores/asr6601/drivers/peripheral/inc/tremo_i2c.h
@@ -84,6 +84,7 @@ typedef enum {
     I2C_FLAG_RFIFO_EMPTY = 0,  /*!< Receive FIFO is empty */
     I2C_FLAG_UNIT_BUSY   = 15, /*!< I2C unit is busy */
     I2C_FLAG_BUS_BUSY    = 16, /*!< I2C bus is empty */
+	I2C_FLAG_ERR_LB_NAK = 14,  /*!< I2C Last Byte Naked: MASTER_I2C_NACK                 */
 
     I2C_FLAG_ARBITRATION_LOSS = 18, /*!< Arbitration loss */
     I2C_FLAG_TRANS_EMPTY      = 19, /*!< Transmit data empty */