diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c
index aa55cfca9e40..a9a0bd918d1e 100644
--- a/drivers/regulator/pfuze100-regulator.c
+++ b/drivers/regulator/pfuze100-regulator.c
@@ -763,7 +763,7 @@ static int pfuze100_regulator_probe(struct i2c_client *client,
 		((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001"))));
 
 	memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators,
-		sizeof(pfuze_chip->regulator_descs));
+		regulator_num * sizeof(struct pfuze_regulator));
 
 	ret = pfuze_parse_regulators_dt(pfuze_chip);
 	if (ret)