diff --git a/src/aead.c b/src/aead.c
index 358ec938..330b10f6 100644
--- a/src/aead.c
+++ b/src/aead.c
@@ -596,7 +596,7 @@ aead_chunk_decrypt(cipher_ctx_t *ctx, uint8_t *p, uint8_t *c, uint8_t *n,
         return CRYPTO_ERROR;
     assert(*plen == CHUNK_SIZE_LEN);
 
-    mlen = load16_be(len_buf);
+    mlen = ntohs(*(uint16_t*)len_buf);
     mlen = mlen & CHUNK_SIZE_MASK;
 
     if (mlen == 0)