diff --git a/crypto/cast5.c b/crypto/cast5.c
index 282641c..8834c85 100644
--- a/crypto/cast5.c
+++ b/crypto/cast5.c
@@ -809,6 +809,7 @@
 	.cra_flags 	= CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize 	= CAST5_BLOCK_SIZE,
 	.cra_ctxsize 	= sizeof(struct cast5_ctx),
+	.cra_alignmask	= 3,
 	.cra_module 	= THIS_MODULE,
 	.cra_list 	= LIST_HEAD_INIT(alg.cra_list),
 	.cra_u 		= {