diff --git a/test/default/chacha20.c b/test/default/chacha20.c
index 484c9283..78ecdde1 100644
--- a/test/default/chacha20.c
+++ b/test/default/chacha20.c
@@ -36,6 +36,8 @@ static void tv(void)
 
     memset(out, 0x42, sizeof out);
 
+    assert(crypto_stream_chacha20(out, 0U, nonce, key) == 0);
+    assert(crypto_stream_chacha20_xor(out, out, 0U, nonce, key) == 0);
     assert(crypto_stream_chacha20_xor(out, out, 0U, nonce, key) == 0);
     assert(crypto_stream_chacha20_xor_ic(out, out, 0U, nonce, 1U, key) == 0);