diff --git a/roulier/carriers/ciblex/schema.py b/roulier/carriers/ciblex/schema.py
index ba2284f..9b04543 100644
--- a/roulier/carriers/ciblex/schema.py
+++ b/roulier/carriers/ciblex/schema.py
@@ -1,6 +1,7 @@
 # Copyright 2024 Akretion (http://www.akretion.com).
 # @author Florian Mounier <florian.mounier@akretion.com>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from pydantic import Field
 from ...helpers import prefix, suffix, none_as_empty, unaccent
 from ...schema import (
     LabelInput,
@@ -72,8 +73,10 @@ class CiblexAddress(Address):
     zip: str
     city: str
     country: str  # FR ou MC, enum?
-    street3: str | None = None
-    street4: str | None = None
+    street1: str | None = Field(max_length=40, default=None)
+    street2: str | None = Field(max_length=40, default=None)
+    street3: str | None = Field(max_length=40, default=None)
+    street4: str | None = Field(max_length=40, default=None)
 
     def params(self):
         return {
diff --git a/roulier/carriers/ciblex/tests/test_ciblex.py b/roulier/carriers/ciblex/tests/test_ciblex.py
index a00991a..eec53f7 100644
--- a/roulier/carriers/ciblex/tests/test_ciblex.py
+++ b/roulier/carriers/ciblex/tests/test_ciblex.py
@@ -5,6 +5,7 @@
 import pytest
 from datetime import date
 from roulier import roulier
+from roulier.exception import InvalidApiInput
 from base64 import b64decode
 from ....helpers import merge
 from ....tests.helpers import assert_pdf
@@ -88,3 +89,15 @@ def test_ciblex_label_epl(get_label_data):
     tracking = rv["parcels"][0]["tracking"]
     assert tracking["number"]
     assert tracking["url"].startswith("https://secure.extranet.ciblex.fr")
+
+
+@pytest.mark.block_network
+def test_ciblex_label_bad_street(get_label_data):
+    data = get_label_data
+    data["to_address"]["street1"] = "23 rue de la République 75001 Paris CEDEX 129832Z"
+
+    with pytest.raises(
+        InvalidApiInput,
+        match="to_address.street1\n  String should have at most 40 characters",
+    ):
+        roulier.get("ciblex", "get_label", data)