.cra_name               = "__ecb-cast6-avx",
        .cra_driver_name        = "__driver-ecb-cast6-avx",
        .cra_priority           = 0,
-       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
+       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
+                                 CRYPTO_ALG_INTERNAL,
        .cra_blocksize          = CAST6_BLOCK_SIZE,
        .cra_ctxsize            = sizeof(struct cast6_ctx),
        .cra_alignmask          = 0,
        .cra_name               = "__cbc-cast6-avx",
        .cra_driver_name        = "__driver-cbc-cast6-avx",
        .cra_priority           = 0,
-       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
+       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
+                                 CRYPTO_ALG_INTERNAL,
        .cra_blocksize          = CAST6_BLOCK_SIZE,
        .cra_ctxsize            = sizeof(struct cast6_ctx),
        .cra_alignmask          = 0,
        .cra_name               = "__ctr-cast6-avx",
        .cra_driver_name        = "__driver-ctr-cast6-avx",
        .cra_priority           = 0,
-       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
+       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
+                                 CRYPTO_ALG_INTERNAL,
        .cra_blocksize          = 1,
        .cra_ctxsize            = sizeof(struct cast6_ctx),
        .cra_alignmask          = 0,
        .cra_name               = "__lrw-cast6-avx",
        .cra_driver_name        = "__driver-lrw-cast6-avx",
        .cra_priority           = 0,
-       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
+       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
+                                 CRYPTO_ALG_INTERNAL,
        .cra_blocksize          = CAST6_BLOCK_SIZE,
        .cra_ctxsize            = sizeof(struct cast6_lrw_ctx),
        .cra_alignmask          = 0,
        .cra_name               = "__xts-cast6-avx",
        .cra_driver_name        = "__driver-xts-cast6-avx",
        .cra_priority           = 0,
-       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER,
+       .cra_flags              = CRYPTO_ALG_TYPE_BLKCIPHER |
+                                 CRYPTO_ALG_INTERNAL,
        .cra_blocksize          = CAST6_BLOCK_SIZE,
        .cra_ctxsize            = sizeof(struct cast6_xts_ctx),
        .cra_alignmask          = 0,