diff --git a/README.md b/README.md
index 25e980e..cd4009a 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,6 @@ CONFIG_FREERTOS_HZ=1000
 CONFIG_GPIO_CTRL_FUNC_IN_IRAM
 CONFIG_I2C_ISR_IRAM_SAFE
 CONFIG_I2C_MASTER_ISR_HANDLER_IN_IRAM
-CONFIG_I2C_ENABLE_SLAVE_DRIVER_VERSION_2
 ```
 
 ## Connection