diff --git a/crypto/evp/e_aes.c b/crypto/evp/e_aes.c
index 619168009..360f57273 100644
--- a/crypto/evp/e_aes.c
+++ b/crypto/evp/e_aes.c
@@ -2684,8 +2684,11 @@ static int aes_ocb_cleanup(EVP_CIPHER_CTX *c)
     return 1;
 }
 
-BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB, CUSTOM_FLAGS)
-    BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB, CUSTOM_FLAGS)
-    BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB, CUSTOM_FLAGS)
+BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB,
+                    EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB,
+                    EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB,
+                    EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
 # endif                         /* OPENSSL_NO_OCB */
 #endif