diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index 573abe440842..2fa43183d375 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -335,7 +335,7 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
 	u8 temp;
 	
 	/* driver_data might come from user-space, so check it */
-	if (id->driver_data > ARRAY_SIZE(chipname))
+	if (id->driver_data >= ARRAY_SIZE(chipname))
 		return -EINVAL;
 
 	if (amd756_ioport) {