diff --git a/drivers/st/bsec/bsec.c b/drivers/st/bsec/bsec.c
index b3c15ee..01c369e 100644
--- a/drivers/st/bsec/bsec.c
+++ b/drivers/st/bsec/bsec.c
@@ -841,22 +841,6 @@
 }
 
 /*
- * bsec_mode_is_closed_device: read OTP secure sub-mode.
- * return: false if open_device and true of closed_device.
- */
-bool bsec_mode_is_closed_device(void)
-{
-	uint32_t value;
-
-	if ((bsec_shadow_register(DATA0_OTP) != BSEC_OK) ||
-	    (bsec_read_otp(&value, DATA0_OTP) != BSEC_OK)) {
-		return true;
-	}
-
-	return (value & DATA0_OTP_SECURED) == DATA0_OTP_SECURED;
-}
-
-/*
  * bsec_shadow_read_otp: Load OTP from SAFMEM and provide its value
  * otp_value: read value.
  * word: OTP number.
@@ -894,7 +878,7 @@
 
 	if (otp >= STM32MP1_UPPER_OTP_START) {
 		/* Check if BSEC is in OTP-SECURED closed_device state. */
-		if (bsec_mode_is_closed_device()) {
+		if (stm32mp_is_closed_device()) {
 			if (!non_secure_can_access(otp)) {
 				return BSEC_ERROR;
 			}