diff --git a/module/os/freebsd/zfs/zio_crypt.c b/module/os/freebsd/zfs/zio_crypt.c
index c5e745f7d1..fdbe13dbb5 100644
--- a/module/os/freebsd/zfs/zio_crypt.c
+++ b/module/os/freebsd/zfs/zio_crypt.c
@@ -1555,13 +1555,12 @@ zio_crypt_init_uios_normal(boolean_t encrypt, uint8_t *plainbuf,
 	iovec_t *plain_iovecs = NULL, *cipher_iovecs = NULL;
 	void *src, *dst;
 
-	cipher_iovecs = kmem_alloc(nr_cipher * sizeof (iovec_t),
+	cipher_iovecs = kmem_zalloc(nr_cipher * sizeof (iovec_t),
 	    KM_SLEEP);
 	if (!cipher_iovecs) {
 		ret = SET_ERROR(ENOMEM);
 		goto error;
 	}
-	memset(cipher_iovecs, 0, nr_cipher * sizeof (iovec_t));
 
 	if (encrypt) {
 		src = plainbuf;