diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c
index 9db1767e7c4..7d44fb928be 100644
--- a/sys/compat/linux/linux_misc.c
+++ b/sys/compat/linux/linux_misc.c
@@ -2516,6 +2516,7 @@ linux_getrandom(struct thread *td, struct linux_getrandom_args *args)
 {
 	struct uio uio;
 	struct iovec iov;
+	int error;
 
 	if (args->flags & ~(LINUX_GRND_NONBLOCK|LINUX_GRND_RANDOM))
 		return (EINVAL);
@@ -2532,7 +2533,10 @@ linux_getrandom(struct thread *td, struct linux_getrandom_args *args)
 	uio.uio_rw = UIO_READ;
 	uio.uio_td = td;
 
-	return (read_random_uio(&uio, args->flags & LINUX_GRND_NONBLOCK));
+	error = read_random_uio(&uio, args->flags & LINUX_GRND_NONBLOCK);
+	if (error == 0)
+		td->td_retval[0] = args->count - uio.uio_resid;
+	return (error);
 }
 
 int