diff --git a/drivers/regulator/bd71828-regulator.c b/drivers/regulator/bd71828-regulator.c
index c8f3343cfe23..473beb4399d9 100644
--- a/drivers/regulator/bd71828-regulator.c
+++ b/drivers/regulator/bd71828-regulator.c
@@ -785,7 +785,7 @@ static const struct bd71828_regulator_data bd71828_rdata[] = {
 	},
 };
 
-#define BD72720_BUCK10_DESC_INDEX 10
+#define BD72720_BUCK10_DESC_INDEX 9
 #define BD72720_NUM_BUCK_VOLTS 0x100
 #define BD72720_NUM_LDO_VOLTS 0x100
 #define BD72720_NUM_LDO12346_VOLTS 0x80