diff --git a/crypto/authenc.c b/crypto/authenc.c
index fbbc2b5..80d9d0b 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -333,7 +333,7 @@
 	inst->alg.cra_alignmask = auth->cra_alignmask | enc->cra_alignmask;
 	inst->alg.cra_type = &crypto_aead_type;
 
-	inst->alg.cra_aead.ivsize = enc->cra_blkcipher.ivsize;
+	inst->alg.cra_aead.ivsize = enc->cra_ablkcipher.ivsize;
 	inst->alg.cra_aead.maxauthsize = auth->cra_type == &crypto_hash_type ?
 					 auth->cra_hash.digestsize :
 					 auth->cra_digest.dia_digestsize;