diff --git a/openapi_python_client/openapi_parser/properties.py b/openapi_python_client/openapi_parser/properties.py
index 66e1920ae..b8cd95479 100644
--- a/openapi_python_client/openapi_parser/properties.py
+++ b/openapi_python_client/openapi_parser/properties.py
@@ -364,8 +364,6 @@ def _string_based_property(
 ) -> Union[StringProperty, DateProperty, DateTimeProperty, FileProperty]:
     """ Construct a Property from the type "string" """
     string_format = data.get("format")
-    if string_format is None:
-        return StringProperty(name=name, default=data.get("default"), required=required, pattern=data.get("pattern"))
     if string_format == "date-time":
         return DateTimeProperty(name=name, required=required, default=data.get("default"))
     elif string_format == "date":
@@ -373,7 +371,7 @@ def _string_based_property(
     elif string_format == "binary":
         return FileProperty(name=name, required=required, default=data.get("default"))
     else:
-        raise ParseError(data=data, message=f'Unsupported string format:{data["format"]}')
+        return StringProperty(name=name, default=data.get("default"), required=required, pattern=data.get("pattern"))
 
 
 def property_from_dict(name: str, required: bool, data: Dict[str, Any]) -> Property:
diff --git a/openapi_python_client/openapi_parser/responses.py b/openapi_python_client/openapi_parser/responses.py
index c00cca8ea..f9f373ea3 100644
--- a/openapi_python_client/openapi_parser/responses.py
+++ b/openapi_python_client/openapi_parser/responses.py
@@ -80,7 +80,7 @@ def constructor(self) -> str:
 def response_from_dict(*, status_code: int, data: Dict[str, Any]) -> Response:
     """ Generate a Response from the OpenAPI dictionary representation of it """
     if "content" not in data:
-        raise ParseError(data)
+        return Response(status_code=status_code)
 
     content = data["content"]
     if "application/json" in content:
diff --git a/tests/test_openapi_parser/test_properties.py b/tests/test_openapi_parser/test_properties.py
index 96908c14b..9d03c7d60 100644
--- a/tests/test_openapi_parser/test_properties.py
+++ b/tests/test_openapi_parser/test_properties.py
@@ -640,8 +640,23 @@ def test__string_based_property_unsupported_format(self, mocker):
             "type": "string",
             "format": mocker.MagicMock(),
         }
+        StringProperty = mocker.patch(f"{MODULE_NAME}.StringProperty")
 
         from openapi_python_client.openapi_parser.properties import _string_based_property
 
-        with pytest.raises(ValueError):
-            _string_based_property(name=name, required=required, data=data)
+        p = _string_based_property(name=name, required=required, data=data)
+
+        StringProperty.assert_called_once_with(name=name, required=required, pattern=None, default=None)
+        assert p == StringProperty.return_value
+
+        # Test optional values
+        StringProperty.reset_mock()
+        data["default"] = mocker.MagicMock()
+        data["pattern"] = mocker.MagicMock()
+
+        _string_based_property(
+            name=name, required=required, data=data,
+        )
+        StringProperty.assert_called_once_with(
+            name=name, required=required, pattern=data["pattern"], default=data["default"]
+        )
diff --git a/tests/test_openapi_parser/test_responses.py b/tests/test_openapi_parser/test_responses.py
index 41fc0452b..72eb6c3f3 100644
--- a/tests/test_openapi_parser/test_responses.py
+++ b/tests/test_openapi_parser/test_responses.py
@@ -95,11 +95,15 @@ def test_constructor(self):
 
 
 class TestResponseFromDict:
-    def test_response_from_dict_no_content(self):
+    def test_response_from_dict_no_content(self, mocker):
         from openapi_python_client.openapi_parser.responses import response_from_dict
+        Response = mocker.patch(f"{MODULE_NAME}.Response")
 
-        with pytest.raises(ValueError):
-            response_from_dict(status_code=200, data={})
+        status_code = mocker.MagicMock(autospec=int)
+        response = response_from_dict(status_code=status_code, data={}) 
+        
+        Response.assert_called_once_with(status_code=status_code)
+        assert response == Response()
 
     def test_response_from_dict_unsupported_content_type(self):
         from openapi_python_client.openapi_parser.responses import response_from_dict