diff --git a/kernel/busses/i2c-piix4.c b/kernel/busses/i2c-piix4.c
index e801eff9..af507888 100644
--- a/kernel/busses/i2c-piix4.c
+++ b/kernel/busses/i2c-piix4.c
@@ -455,7 +455,7 @@ u32 piix4_func(struct i2c_adapter *adapter)
 {
   return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | 
          I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | 
-         I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_PROC_CALL;
+         I2C_FUNC_SMBUS_BLOCK_DATA;
 }
 
 int __init i2c_piix4_init(void)