diff --git a/homeassistant/components/ourgroceries/todo.py b/homeassistant/components/ourgroceries/todo.py
index 8115066d0fb..5b8d19e5aa1 100644
--- a/homeassistant/components/ourgroceries/todo.py
+++ b/homeassistant/components/ourgroceries/todo.py
@@ -89,7 +89,7 @@ class OurGroceriesTodoListEntity(
         if item.summary:
             api_items = self.coordinator.data[self._list_id]["list"]["items"]
             category = next(
-                api_item["categoryId"]
+                api_item.get("categoryId")
                 for api_item in api_items
                 if api_item["id"] == item.uid
             )
diff --git a/tests/components/ourgroceries/test_todo.py b/tests/components/ourgroceries/test_todo.py
index 65bbff0e601..8686c52d79b 100644
--- a/tests/components/ourgroceries/test_todo.py
+++ b/tests/components/ourgroceries/test_todo.py
@@ -142,12 +142,20 @@ async def test_update_todo_item_status(
 
 
 @pytest.mark.parametrize(
-    ("items"), [[{"id": "12345", "name": "Soda", "categoryId": "test_category"}]]
+    ("items", "category"),
+    [
+        (
+            [{"id": "12345", "name": "Soda", "categoryId": "test_category"}],
+            "test_category",
+        ),
+        ([{"id": "12345", "name": "Uncategorized"}], None),
+    ],
 )
 async def test_update_todo_item_summary(
     hass: HomeAssistant,
     setup_integration: None,
     ourgroceries: AsyncMock,
+    category: str | None,
 ) -> None:
     """Test for updating an item summary."""
 
@@ -171,7 +179,7 @@ async def test_update_todo_item_summary(
     )
     assert ourgroceries.change_item_on_list
     args = ourgroceries.change_item_on_list.call_args
-    assert args.args == ("test_list", "12345", "test_category", "Milk")
+    assert args.args == ("test_list", "12345", category, "Milk")
 
 
 @pytest.mark.parametrize(