diff --git a/tests/validators/allow_empty_string_test.py b/tests/validators/allow_empty_string_test.py
index 2074b97..0ad3228 100644
--- a/tests/validators/allow_empty_string_test.py
+++ b/tests/validators/allow_empty_string_test.py
@@ -30,7 +30,7 @@ def test_allow_empty_string_valid(input_data, expected_result):
         validator = AllowEmptyString(DecimalValidator())
         result = validator.validate(input_data)
 
-        assert type(result) == type(expected_result)
+        assert type(result) is type(expected_result)
         assert result == expected_result
 
     @staticmethod
@@ -46,7 +46,7 @@ def test_allow_empty_string_with_default_valid(input_data, expected_result):
         validator = AllowEmptyString(DecimalValidator(), default=Decimal('3.1415'))
         result = validator.validate(input_data)
 
-        assert type(result) == type(expected_result)
+        assert type(result) is type(expected_result)
         assert result == expected_result
 
     @staticmethod
diff --git a/tests/validators/none_to_unset_value_test.py b/tests/validators/none_to_unset_value_test.py
index 31eb436..bd5eab7 100644
--- a/tests/validators/none_to_unset_value_test.py
+++ b/tests/validators/none_to_unset_value_test.py
@@ -31,7 +31,7 @@ def test_valid(input_data, expected_result):
         validator = NoneToUnsetValue(DecimalValidator())
         result = validator.validate(input_data)
 
-        assert type(result) == type(expected_result)
+        assert type(result) is type(expected_result)
         assert result == expected_result
 
     @staticmethod
diff --git a/tests/validators/noneable_test.py b/tests/validators/noneable_test.py
index 804e3a7..9073f28 100644
--- a/tests/validators/noneable_test.py
+++ b/tests/validators/noneable_test.py
@@ -31,7 +31,7 @@ def test_noneable_valid(input_data, expected_result):
         validator = Noneable(DecimalValidator())
         result = validator.validate(input_data)
 
-        assert type(result) == type(expected_result)
+        assert type(result) is type(expected_result)
         assert result == expected_result
 
     @staticmethod
@@ -47,7 +47,7 @@ def test_noneable_with_default_valid(input_data, expected_result):
         validator = Noneable(DecimalValidator(), default=Decimal('3.1415'))
         result = validator.validate(input_data)
 
-        assert type(result) == type(expected_result)
+        assert type(result) is type(expected_result)
         assert result == expected_result
 
     @staticmethod