diff --git a/tests/snippets/builtin_ord.py b/tests/snippets/builtin_ord.py
index 2549f28e7..c9bc40f5f 100644
--- a/tests/snippets/builtin_ord.py
+++ b/tests/snippets/builtin_ord.py
@@ -3,7 +3,11 @@ from testutils import assert_raises
 assert ord("a") == 97
 assert ord("é") == 233
 assert ord("🤡") == 129313
+assert ord(b'a') == 97
+assert ord(bytearray(b'a')) == 97
 
 assert_raises(TypeError, lambda: ord(), "ord() is called with no argument")
 assert_raises(TypeError, lambda: ord(""), "ord() is called with an empty string")
 assert_raises(TypeError, lambda: ord("ab"), "ord() is called with more than one character")
+assert_raises(TypeError, lambda: ord(b"ab"), "ord() expected a character, but string of length 2 found")
+assert_raises(TypeError, lambda: ord(1), "ord() expected a string, bytes or bytearray, but found int")