diff --git a/pydantic/json_schema.py b/pydantic/json_schema.py
index 07a385f24a..c81a2899c3 100644
--- a/pydantic/json_schema.py
+++ b/pydantic/json_schema.py
@@ -2224,7 +2224,7 @@ def _sort_json_schema(value: JsonSchemaValue, parent_key: str | None = None) ->
     if isinstance(value, dict):
         sorted_dict: dict[str, JsonSchemaValue] = {}
         keys = value.keys()
-        if parent_key != 'properties':
+        if (parent_key != 'properties') and (parent_key != 'default'):
             keys = sorted(keys)
         for key in keys:
             sorted_dict[key] = _sort_json_schema(value[key], parent_key=key)
@@ -2232,7 +2232,7 @@ def _sort_json_schema(value: JsonSchemaValue, parent_key: str | None = None) ->
     elif isinstance(value, list):
         sorted_list: list[JsonSchemaValue] = []
         for item in value:  # type: ignore
-            sorted_list.append(_sort_json_schema(item))
+            sorted_list.append(_sort_json_schema(item, parent_key))
         return sorted_list  # type: ignore
     else:
         return value
diff --git a/tests/test_json_schema.py b/tests/test_json_schema.py
index 397b65ef17..105732eb43 100644
--- a/tests/test_json_schema.py
+++ b/tests/test_json_schema.py
@@ -5260,7 +5260,7 @@ class Model(BaseModel):
         a: str
 
     class OuterModel(BaseModel):
-        inner: List[Model]
+        inner: List[Model] = Field(default=[Model(b=1, a='fruit')])
 
     # verify the schema contents
     # this is just to get a nicer error message / diff if it fails
@@ -5273,8 +5273,14 @@ class OuterModel(BaseModel):
                 'type': 'object',
             }
         },
-        'properties': {'inner': {'items': {'$ref': '#/$defs/Model'}, 'title': 'Inner', 'type': 'array'}},
-        'required': ['inner'],
+        'properties': {
+            'inner': {
+                'default': [{'b': 1, 'a': 'fruit'}],
+                'items': {'$ref': '#/$defs/Model'},
+                'title': 'Inner',
+                'type': 'array',
+            }
+        },
         'title': 'OuterModel',
         'type': 'object',
     }