diff --git a/piccolo/utils/objects.py b/piccolo/utils/objects.py
index 998b869e7..2f17c29a2 100644
--- a/piccolo/utils/objects.py
+++ b/piccolo/utils/objects.py
@@ -69,7 +69,7 @@ def make_nested_object(
             else:
                 # The value doesn't belong to a foreign key, so just append it.
                 table_params[key] = value
-        elif load_json and key in json_column_names:
+        elif load_json and key in json_column_names and value is not None:
             table_params[key] = encoding.load_json(value)
         else:
             table_params[key] = value
diff --git a/tests/example_apps/music/piccolo_migrations/2021-07-25T22-38-48-009306.py b/tests/example_apps/music/piccolo_migrations/2021-07-25T22-38-48-009306.py
index 0bddaf7cf..6da98adee 100644
--- a/tests/example_apps/music/piccolo_migrations/2021-07-25T22-38-48-009306.py
+++ b/tests/example_apps/music/piccolo_migrations/2021-07-25T22-38-48-009306.py
@@ -43,7 +43,7 @@ async def forwards():
         column_class=JSON,
         params={
             "default": "{}",
-            "null": False,
+            "null": True,
             "primary_key": False,
             "unique": False,
             "index": False,
@@ -60,7 +60,7 @@ async def forwards():
         column_class=JSONB,
         params={
             "default": "{}",
-            "null": False,
+            "null": True,
             "primary_key": False,
             "unique": False,
             "index": False,
diff --git a/tests/example_apps/music/tables.py b/tests/example_apps/music/tables.py
index e8b5b856b..7d868bd9c 100644
--- a/tests/example_apps/music/tables.py
+++ b/tests/example_apps/music/tables.py
@@ -114,8 +114,8 @@ class RecordingStudio(Table):
     """
 
     id: Serial
-    facilities = JSON()
-    facilities_b = JSONB()
+    facilities = JSON(null=True)
+    facilities_b = JSONB(null=True)
 
 
 class Instrument(Table):
diff --git a/tests/table/test_join.py b/tests/table/test_join.py
index 0aa31a676..f1ac36451 100644
--- a/tests/table/test_join.py
+++ b/tests/table/test_join.py
@@ -433,6 +433,32 @@ def test_objects_nested_with_load_json(self):
             {"restaurant": True},
         )
 
+    def test_objects_nested_with_load_json_null(self):
+        """
+        Make sure that nested objects works alongside ``load_json``, when
+        the nested object has a null value for a JSON column.
+
+        https://github.com/piccolo-orm/piccolo/issues/1391
+
+        """
+        RecordingStudio.update(
+            {
+                RecordingStudio.facilities: None,
+            },
+            force=True,
+        ).run_sync()
+
+        instrument = (
+            Instrument.objects(Instrument.recording_studio)
+            .output(load_json=True)
+            .first()
+            .run_sync()
+        )
+        assert instrument is not None
+        self.assertIsNone(
+            instrument.recording_studio.facilities,
+        )
+
     def test_objects_prefetch_clause(self):
         """
         Make sure that ``prefetch`` clause works correctly.