diff --git a/keyboards/dark_project/cm81/config.h b/keyboards/dark_project/cm81/config.h
index e7b8580ce66..e2e3f496c04 100644
--- a/keyboards/dark_project/cm81/config.h
+++ b/keyboards/dark_project/cm81/config.h
@@ -19,8 +19,6 @@
 #define SNLED27351_I2C_ADDRESS_2 SNLED27351_I2C_ADDRESS_VDDIO
 #define I2C1_SDA_PIN B7
 #define I2C1_SCL_PIN B6
-#define I2C1_SCL_PAL_MODE 4
-#define I2C1_OPMODE OPMODE_I2C
 #define I2C1_CLOCK_SPEED 400000 /* 400000 */
 
 #define LED_MAC_OS_PIN B13