diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
index 584d0a4..928e02b 100644
--- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
+++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
@@ -145,5 +145,5 @@
 	.probe = i2c_arbitrator_probe,
 	.remove = i2c_arbitrator_remove,
 	.ops = &i2c_arbitrator_ops,
-	.priv_auto_alloc_size = sizeof(struct i2c_arbitrator_priv),
+	.priv_auto	= sizeof(struct i2c_arbitrator_priv),
 };