diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index d994d386b58ac197d1a5eb8b6c814bd3894e21d4..95e60781748fcd009c902086767722ae04707055 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -487,7 +487,7 @@ static void sysconf_init(void)
 		}
 
 		ret = misc_read(dev, STM32_BSEC_SHADOW(18), &otp, 4);
-		if (!ret)
+		if (ret > 0)
 			otp = otp & BIT(13);
 
 		/* get VDD = vdd-supply */