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-rw-r--r--keyboards/ferris/0_2/matrix.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/keyboards/ferris/0_2/matrix.c b/keyboards/ferris/0_2/matrix.c
index 74fab717a1..76bbcaf7b5 100644
--- a/keyboards/ferris/0_2/matrix.c
+++ b/keyboards/ferris/0_2/matrix.c
@@ -30,8 +30,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
extern i2c_status_t mcp23017_status;
#define MCP23017_I2C_TIMEOUT 1000
-#define I2C_WRITE 0x00
-#define I2C_READ 0x01
+
// For a better understanding of the i2c protocol, this is a good read:
// https://www.robot-electronics.co.uk/i2c-tutorial