diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index 7a005dd..d7e7c35 100644
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -287,7 +287,7 @@
 	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
 }
 
-static struct i2c_algorithm au1550_algo = {
+static const struct i2c_algorithm au1550_algo = {
 	.master_xfer	= au1550_xfer,
 	.functionality	= au1550_func,
 };