diff --git a/kiss_headers/models.py b/kiss_headers/models.py
index 266b160..1e2f556 100644
--- a/kiss_headers/models.py
+++ b/kiss_headers/models.py
@@ -1224,7 +1224,8 @@ def __init__(self, members: List[str]):
         for member, index in zip(members, range(0, len(members))):
             if member == "":
                 continue
-
+            if isinstance(member, str) is False:
+                member = str(member)
             if "=" in member:
                 key, value = tuple(member.split("=", maxsplit=1))
 
diff --git a/kiss_headers/utils.py b/kiss_headers/utils.py
index 31b2037..afeebfc 100644
--- a/kiss_headers/utils.py
+++ b/kiss_headers/utils.py
@@ -1,4 +1,5 @@
 from email.header import decode_header
+from json import dumps
 from re import findall, search, sub
 from typing import Any, Iterable, List, Optional, Set, Tuple, Type, Union
 
@@ -469,10 +470,18 @@ def transform_possible_encoded(
     decoded = []
 
     for k, v in headers:
+        # we shall discard it if set to None.
+        if v is None:
+            continue
         if isinstance(k, bytes):
             k = k.decode("utf_8")
         if isinstance(v, bytes):
             v = v.decode("utf_8")
+        elif isinstance(v, str) is False:
+            if isinstance(v, (dict, list)):
+                v = dumps(v)
+            else:
+                v = str(v)
         decoded.append((k, v))
 
     return decoded
diff --git a/kiss_headers/version.py b/kiss_headers/version.py
index a005319..f2b4cfb 100644
--- a/kiss_headers/version.py
+++ b/kiss_headers/version.py
@@ -2,5 +2,5 @@
 Expose version
 """
 
-__version__ = "2.4.1"
+__version__ = "2.4.2"
 VERSION = __version__.split(".")
diff --git a/tests/test_from_unknown_mapping.py b/tests/test_from_unknown_mapping.py
new file mode 100644
index 0000000..4271225
--- /dev/null
+++ b/tests/test_from_unknown_mapping.py
@@ -0,0 +1,32 @@
+import unittest
+
+from kiss_headers import parse_it
+
+
+class UnknownMappingTest(unittest.TestCase):
+    def test_parse_with_bytes(self):
+        headers = parse_it({"User-Agent": b"Hello!"})
+
+        self.assertTrue("User-Agent" in headers)
+
+    def test_parse_with_None(self):
+        headers = parse_it({"User-Agent": None, "Test": "Hello!"})
+
+        self.assertTrue("User-Agent" not in headers)
+        self.assertTrue("Test" in headers)
+
+    def test_with_type_madness(self):
+        headers = parse_it(
+            {
+                "User-Agent": b"Hello!",
+                "Age": 30,
+                "Type": 1.554,
+                "BeCrazy": {"pff!": "?"},
+                "Again": ["a", 0, 8, -1],
+            }
+        )
+
+        self.assertTrue("User-Agent" in headers)
+        self.assertTrue(headers.get("User-agent").content == "Hello!")
+        self.assertTrue(headers.get("Age").content == "30")
+        self.assertTrue(headers.get("Again").content == '["a", 0, 8, -1]')