diff --git a/include/picotls.h b/include/picotls.h
index 90a3e53..0162fe8 100644
--- a/include/picotls.h
+++ b/include/picotls.h
@@ -324,7 +324,7 @@
     const struct st_ptls_aead_algorithm_t *algo;
     /* field above this line must not be altered by the crypto binding */
     void (*dispose_crypto)(struct st_ptls_aead_context_t *ctx);
-    void (*do_xor_iv)(struct st_ptls_aead_context_t *ctx, const void * xor, size_t xorlen);
+    void (*do_xor_iv)(struct st_ptls_aead_context_t *ctx, const void * bytes, size_t len);
     void (*do_encrypt_init)(struct st_ptls_aead_context_t *ctx, uint64_t seq, const void *aad, size_t aadlen);
     size_t (*do_encrypt_update)(struct st_ptls_aead_context_t *ctx, void *output, const void *input, size_t inlen);
     size_t (*do_encrypt_final)(struct st_ptls_aead_context_t *ctx, void *output);
@@ -1233,7 +1233,7 @@
  * Permutes the static IV by applying given bytes using bit-wise XOR. This API can be used for supplying nonces longer than 64-
  * bits.
  */
-static void ptls_aead_xor_iv(ptls_aead_context_t *ctx, const void *bytes, size_t len); 
+static void ptls_aead_xor_iv(ptls_aead_context_t *ctx, const void *bytes, size_t len);
 /**
  *
  */