diff --git a/os/hal/include/i2c.h b/os/hal/include/i2c.h
index acf09ec9c..96f85460d 100644
--- a/os/hal/include/i2c.h
+++ b/os/hal/include/i2c.h
@@ -256,11 +256,11 @@ extern "C" {
   void i2cObjectInit(I2CDriver *i2cp);
   void i2cStart(I2CDriver *i2cp, const I2CConfig *config);
   void i2cStop(I2CDriver *i2cp);
-  void i2cMasterTransmit(I2CDriver *i2cp, const I2CSlaveConfig *i2cscfg,
+  void i2cMasterTransmit(I2CDriver *i2cp, I2CSlaveConfig *i2cscfg,
       uint16_t slave_addr,
       uint8_t *txbuf, size_t txbytes,
       uint8_t *rxbuf, size_t rxbytes);
-  void i2cMasterReceive(I2CDriver *i2cp, const I2CSlaveConfig *i2cscfg,
+  void i2cMasterReceive(I2CDriver *i2cp, I2CSlaveConfig *i2cscfg,
       uint16_t slave_addr, uint8_t *rxbuf, size_t rxbytes);
   void i2cMasterStart(I2CDriver *i2cp);
   void i2cMasterStop(I2CDriver *i2cp);
diff --git a/os/hal/src/i2c.c b/os/hal/src/i2c.c
index 9ce2cc76f..68735b037 100644
--- a/os/hal/src/i2c.c
+++ b/os/hal/src/i2c.c
@@ -166,7 +166,7 @@ void i2cStop(I2CDriver *i2cp) {
  *                        you want transmit only
  */
 void i2cMasterTransmit(I2CDriver *i2cp,
-                      const I2CSlaveConfig *i2cscfg,
+                      I2CSlaveConfig *i2cscfg,
                       uint16_t slave_addr,
                       uint8_t *txbuf,
                       size_t txbytes,
@@ -210,7 +210,7 @@ void i2cMasterTransmit(I2CDriver *i2cp,
  * @param[in] rxbuf       pointer to receive buffer
  */
 void i2cMasterReceive(I2CDriver *i2cp,
-                      const I2CSlaveConfig *i2cscfg,
+                      I2CSlaveConfig *i2cscfg,
                       uint16_t slave_addr,
                       uint8_t *rxbuf,
                       size_t rxbytes){