diff --git a/zh_avr_i2c.c b/zh_avr_i2c.c
index d9c4786..fbc8e47 100644
--- a/zh_avr_i2c.c
+++ b/zh_avr_i2c.c
@@ -80,12 +80,12 @@ avr_err_t zh_avr_i2c_master_receive(const uint8_t addr, uint8_t *data, uint8_t s
 avr_err_t zh_avr_i2c_master_transmit_register(const uint8_t addr, uint16_t *reg, uint8_t *data, uint8_t size, TickType_t xTicksToWait)
 {
 	// To Do.
-	return _zh_avr_i2c_master_start(xTicksToWait);
+	return AVR_OK;
 }
 avr_err_t zh_avr_i2c_master_receive_register(const uint8_t addr, uint16_t *reg, uint8_t *data, uint8_t size, TickType_t xTicksToWait)
 {
 	// To Do.
-	return _zh_avr_i2c_master_start(xTicksToWait);
+	return AVR_OK;
 }
 
 avr_err_t _zh_avr_i2c_master_start(TickType_t xTicksToWait)