diff --git a/ormar/models/newbasemodel.py b/ormar/models/newbasemodel.py
index 2780d3c..5ea2098 100644
--- a/ormar/models/newbasemodel.py
+++ b/ormar/models/newbasemodel.py
@@ -859,6 +859,7 @@ class NewBaseModel(pydantic.BaseModel, ModelTableProxy, metaclass=ModelMetaclass
             relation_value = [
                 relation_field.expand_relationship(x, model, to_register=False)
                 for x in value_to_set
+                if x is not None
             ]
 
             for child in relation_value:
diff --git a/tests/test_model_definition/test_model_construct.py b/tests/test_model_definition/test_model_construct.py
index 87bd4ba..e2d7876 100644
--- a/tests/test_model_definition/test_model_construct.py
+++ b/tests/test_model_definition/test_model_construct.py
@@ -60,6 +60,16 @@ def create_test_database():
     metadata.drop_all(engine)
 
 
+@pytest.mark.asyncio
+async def test_construct_with_empty_relation():
+    async with database:
+        async with database.transaction(force_rollback=True):
+            hq = await HQ.objects.create(name="Main")
+            comp = Company(name="Banzai", hq=None, founded=1988)
+            comp2 = Company.construct(**dict(name="Banzai", hq=None, founded=1988))
+            assert comp.dict() == comp2.dict()
+
+
 @pytest.mark.asyncio
 async def test_init_and_construct_has_same_effect():
     async with database: