diff --git a/AUTHORS.rst b/AUTHORS.rst
index b32babb..108d189 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -33,3 +33,4 @@ Contributors (chronological)
 - Areeb Jamal `@iamareebjamal <https://github.com/iamareebjamal>`_
 - Suren Khorenyan `@mahenzon <https://github.com/mahenzon>`_
 - Karthikeyan Singaravelan `@tirkarthi <https://github.com/tirkarthi>`_
+- Vlad Munteanu `@vladmunteanu https://github.com/vladmunteanu/`
diff --git a/marshmallow_jsonapi/fields.py b/marshmallow_jsonapi/fields.py
index 0e16527..62aac21 100644
--- a/marshmallow_jsonapi/fields.py
+++ b/marshmallow_jsonapi/fields.py
@@ -152,7 +152,9 @@ def schema(self):
 
     def get_related_url(self, obj):
         if self.related_url:
-            params = resolve_params(obj, self.related_url_kwargs, default=self.default)
+            params = resolve_params(
+                obj, self.related_url_kwargs, default=self.dump_default
+            )
             non_null_params = {
                 key: value for key, value in params.items() if value is not None
             }
@@ -162,7 +164,9 @@ def get_related_url(self, obj):
 
     def get_self_url(self, obj):
         if self.self_url:
-            params = resolve_params(obj, self.self_url_kwargs, default=self.default)
+            params = resolve_params(
+                obj, self.self_url_kwargs, default=self.dump_default
+            )
             non_null_params = {
                 key: value for key, value in params.items() if value is not None
             }
diff --git a/marshmallow_jsonapi/flask.py b/marshmallow_jsonapi/flask.py
index afb095e..fd807de 100644
--- a/marshmallow_jsonapi/flask.py
+++ b/marshmallow_jsonapi/flask.py
@@ -119,7 +119,7 @@ def __init__(
 
     def get_url(self, obj, view_name, view_kwargs):
         if view_name:
-            kwargs = resolve_params(obj, view_kwargs, default=self.default)
+            kwargs = resolve_params(obj, view_kwargs, default=self.dump_default)
             kwargs["endpoint"] = view_name
             try:
                 return flask.url_for(**kwargs)
diff --git a/tests/base.py b/tests/base.py
index 6958d67..78bc992 100644
--- a/tests/base.py
+++ b/tests/base.py
@@ -100,7 +100,7 @@ class Meta:
 
 class PostSchema(Schema):
     id = fields.Str()
-    post_title = fields.Str(attribute="title", dump_to="title", data_key="title")
+    post_title = fields.Str(attribute="title", data_key="title")
 
     author = fields.Relationship(
         "http://test.test/posts/{id}/author/",
@@ -114,8 +114,6 @@ class PostSchema(Schema):
         "http://test.test/posts/{id}/comments/",
         related_url_kwargs={"id": "<id>"},
         attribute="comments",
-        load_from="post-comments",
-        dump_to="post-comments",
         data_key="post-comments",
         schema="CommentSchema",
         many=True,
@@ -126,7 +124,6 @@ class PostSchema(Schema):
         "http://test.test/posts/{id}/keywords/",
         related_url_kwargs={"id": "<id>"},
         attribute="keywords",
-        dump_to="post-keywords",
         data_key="post-keywords",
         schema="KeywordSchema",
         many=True,
diff --git a/tests/test_fields.py b/tests/test_fields.py
index 3203b2c..96f951e 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -353,7 +353,7 @@ def test_empty_relationship_with_alternative_identifier_field(
         field = Relationship(
             related_url="/authors/{author_id}",
             related_url_kwargs={"author_id": "<author.last_name>"},
-            default=None,
+            dump_default=None,
         )
         result = field.serialize("author", post_with_null_author)
 
diff --git a/tests/test_flask.py b/tests/test_flask.py
index 0ca1f66..99cc2a8 100644
--- a/tests/test_flask.py
+++ b/tests/test_flask.py
@@ -52,7 +52,7 @@ class PostAuthorFlaskSchema(Schema):
         field = Relationship(
             related_view="author_detail",
             related_view_kwargs={"author_id": "<author.last_name>"},
-            default=None,
+            dump_default=None,
         )
 
         class Meta:
@@ -166,7 +166,7 @@ def test_empty_relationship_with_alternative_identifier_field(
         field = Relationship(
             related_view="author_detail",
             related_view_kwargs={"author_id": "<author.last_name>"},
-            default=None,
+            dump_default=None,
         )
         result = field.serialize("author", post_with_null_author)
 
diff --git a/tests/test_options.py b/tests/test_options.py
index b4b88c0..5fd2c72 100644
--- a/tests/test_options.py
+++ b/tests/test_options.py
@@ -24,7 +24,7 @@ class Meta:
 class AuthorSchemaWithOverrideInflection(Schema):
     id = fields.Str(dump_only=True)
     # data_key and load_from takes precedence over inflected attribute
-    first_name = fields.Str(data_key="firstName", load_from="firstName")
+    first_name = fields.Str(data_key="firstName")
     last_name = fields.Str()
 
     class Meta:
diff --git a/tests/test_schema.py b/tests/test_schema.py
index 7373cbe..19aeeb0 100755
--- a/tests/test_schema.py
+++ b/tests/test_schema.py
@@ -224,7 +224,7 @@ class PostClassSchema(PostSchema):
                 "http://test.test/posts/{id}/comments/",
                 related_url_kwargs={"id": "<id>"},
                 attribute="comments",
-                dump_to="post-comments",
+                data_key="post-comments",
                 schema=CommentSchema,
                 many=True,
             )
@@ -306,7 +306,6 @@ class PostInnerSchemalessSchema(Schema):
                 "http://test.test/posts/{id}/comments/",
                 related_url_kwargs={"id": "<id>"},
                 data_key="post-comments",
-                load_from="post-comments",
                 many=True,
                 type_="comments",
             )
@@ -834,14 +833,14 @@ class ArticleMissingParamSchema(Schema):
                 include_resource_linkage=True,
                 many=False,
                 type_="people",
-                missing="1",
+                load_default="1",
             )
             comments = fields.Relationship(
                 dump_only=False,
                 include_resource_linkage=True,
                 many=True,
                 type_="comments",
-                missing=["2", "3"],
+                load_default=["2", "3"],
             )
 
             class Meta: