diff --git a/src/validators/__init__.py b/src/validators/__init__.py
index 3aceb37..635a835 100644
--- a/src/validators/__init__.py
+++ b/src/validators/__init__.py
@@ -23,7 +23,7 @@
     fr_ssn,
     ind_aadhar,
     ind_pan,
-    ru_inn
+    ru_inn,
 )
 from .iban import iban
 from .ip_address import ipv4, ipv6
diff --git a/src/validators/i18n/es.py b/src/validators/i18n/es.py
index 4bc6bb6..3d4b1ba 100644
--- a/src/validators/i18n/es.py
+++ b/src/validators/i18n/es.py
@@ -1,15 +1,15 @@
 """Spain."""
 
 # standard
-from typing import Dict, Set
+from typing import Dict
 
 # local
 from validators.utils import validator
 
 
-def _nif_nie_validation(value: str, number_by_letter: Dict[str, str], special_cases: Set[str]):
+def _nif_nie_validation(value: str, number_by_letter: Dict[str, str]):
     """Validate if the doi is a NIF or a NIE."""
-    if value in special_cases or len(value) != 9:
+    if len(value) != 9:
         return False
     value = value.upper()
     table = "TRWAGMYFPDXBNJZSQVHLCKE"
@@ -104,8 +104,7 @@ def es_nif(value: str, /):
         (ValidationError): If `value` is an invalid DOI string.
     """
     number_by_letter = {"L": "0", "M": "0", "K": "0"}
-    special_cases = {"X0000000T", "00000000T", "00000001R"}
-    return _nif_nie_validation(value, number_by_letter, special_cases)
+    return _nif_nie_validation(value, number_by_letter)
 
 
 @validator
@@ -137,7 +136,7 @@ def es_nie(value: str, /):
     number_by_letter = {"X": "0", "Y": "1", "Z": "2"}
     # NIE must must start with X Y or Z
     if value and value[0] in number_by_letter:
-        return _nif_nie_validation(value, number_by_letter, {"X0000000T"})
+        return _nif_nie_validation(value, number_by_letter)
     return False
 
 
diff --git a/src/validators/uri.py b/src/validators/uri.py
index 29092e3..84b534e 100644
--- a/src/validators/uri.py
+++ b/src/validators/uri.py
@@ -68,7 +68,7 @@ def uri(value: str, /):
 
     # email
     if value.startswith("mailto:"):
-        return email(value[len("mailto:"):])
+        return email(value[len("mailto:") :])
 
     # file
     if value.startswith("file:"):
diff --git a/tests/i18n/test_es.py b/tests/i18n/test_es.py
index 32f1719..5b1ce01 100644
--- a/tests/i18n/test_es.py
+++ b/tests/i18n/test_es.py
@@ -94,18 +94,9 @@ def test_returns_true_on_valid_nif(value: str):
     assert es_nif(value)
 
 
-@pytest.mark.parametrize(
-    ("value",),
-    [
-        ("12345",),
-        ("X0000000T",),
-        ("00000000T",),
-        ("00000001R",),
-    ],
-)
-def test_returns_false_on_invalid_nif(value: str):
+def test_returns_false_on_invalid_nif():
     """Test returns false on invalid nif."""
-    result = es_nif(value)
+    result = es_nif("12345")
     assert isinstance(result, ValidationError)
 
 
@@ -117,10 +108,13 @@ def test_returns_false_on_invalid_nif(value: str):
         ("U4839822F",),
         ("B96817697",),
         # NIEs
+        ("X0000000T",),
         ("X0095892M",),
         ("X8868108K",),
         ("X2911154K",),
         # NIFs
+        ("00000001R",),
+        ("00000000T",),
         ("26643189N",),
         ("07060225F",),
         ("49166693F",),