diff --git a/drivers/arm/i2c_master.c b/drivers/arm/i2c_master.c
index 5814375f371f..ba5345365cf4 100644
--- a/drivers/arm/i2c_master.c
+++ b/drivers/arm/i2c_master.c
@@ -106,11 +106,11 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data,
   return chibios_to_qmk(&status);
 }
 
-i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_address = devaddr;
   i2cStart(&I2C_DRIVER, &i2cconfig);
-  msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), regaddr, 1, data, length, MS2ST(timeout));
+  msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), &regaddr, 1, data, length, MS2ST(timeout));
   return chibios_to_qmk(&status);
 }
 
diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h
index 1bb74c800f6c..5eb03b0f7644 100644
--- a/drivers/arm/i2c_master.h
+++ b/drivers/arm/i2c_master.h
@@ -88,5 +88,5 @@ i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length,
 i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
 i2c_status_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length);
 i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
-i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
 void i2c_stop(void);
diff --git a/keyboards/cannonkeys/satisfaction75/i2c_master.c b/keyboards/cannonkeys/satisfaction75/i2c_master.c
index 56e810d32a18..0e3adbbf16f7 100644
--- a/keyboards/cannonkeys/satisfaction75/i2c_master.c
+++ b/keyboards/cannonkeys/satisfaction75/i2c_master.c
@@ -110,11 +110,11 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data,
   return chibios_to_qmk(status);
 }
 
-i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_address = devaddr;
   i2cStart(&I2C_DRIVER, &i2cconfig);
-  msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), regaddr, 1, data, length, MS2ST(timeout));
+  msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), &regaddr, 1, data, length, MS2ST(timeout));
   return chibios_to_qmk(status);
 }