diff --git a/sys/dev/psci/smccc_trng.c b/sys/dev/psci/smccc_trng.c
--- a/sys/dev/psci/smccc_trng.c
+++ b/sys/dev/psci/smccc_trng.c
@@ -122,7 +122,7 @@
 	if (ret < 0)
 		return (0);
 
-	memcpy(buf, &res.a0, len);
+	memcpy(buf, &res.a3, len);
 	return (len);
 }