diff --git a/library/cipher_wrap.c b/library/cipher_wrap.c
index e22c172..893490a 100644
--- a/library/cipher_wrap.c
+++ b/library/cipher_wrap.c
@@ -2040,7 +2040,7 @@
 };
 static const mbedtls_cipher_info_t chachapoly_info = {
     MBEDTLS_CIPHER_CHACHA20_POLY1305,
-    MBEDTLS_MODE_NONE,
+    MBEDTLS_MODE_CHACHAPOLY,
     256,
     "CHACHA20-POLY1305",
     12,