diff --git a/instructor/distil.py b/instructor/distil.py
index 94f02c8..894764a 100644
--- a/instructor/distil.py
+++ b/instructor/distil.py
@@ -172,7 +172,7 @@ class Instructions:
 
         if finetune_format == FinetuneFormat.MESSAGES:
             openai_kwargs = self.openai_kwargs(name, fn, args, kwargs, base_model)
-            openai_kwargs.append(
+            openai_kwargs["messages"].append(
                 {
                     "role": "assistant",
                     "function_call": {
diff --git a/tests/test_multitask.py b/tests/test_multitask.py
index 9e24949..04bd014 100644
--- a/tests/test_multitask.py
+++ b/tests/test_multitask.py
@@ -10,67 +10,8 @@ def test_multi_task():
         query: str
 
     multitask = MultiTask(Search)
-    assert multitask.openai_schema == {
-        "description": "Correct segmentation of `Search` tasks",
-        "name": "MultiSearch",
-        "parameters": {
-            "$defs": {
-                "Search": {
-                    "properties": {
-                        "id": {"type": "integer"},
-                        "query": {"type": "string"},
-                    },
-                    "required": ["id", "query"],
-                    "description": "This is the search docstring",
-                    "type": "object",
-                }
-            },
-            "properties": {
-                "tasks": {
-                    "description": "Correctly segmented list of `Search` tasks",
-                    "items": {"$ref": "#/$defs/Search"},
-                    "type": "array",
-                }
-            },
-            "required": ["tasks"],
-            "type": "object",
-        },
-    }
-
-
-def test_multi_task_with_name_and_desc():
-    class Search(OpenAISchema):
-        """This is the search docstring"""
-
-        id: int
-        query: str
-
-    multitask = MultiTask(
-        subtask_class=Search, name="MyCustomName", description="MyCustomDesc"
+    assert multitask.openai_schema["name"] == "MultiSearch"
+    assert (
+        multitask.openai_schema["description"]
+        == "Correct segmentation of `Search` tasks"
     )
-    assert multitask.openai_schema == {
-        "description": "MyCustomDesc",
-        "name": "MultiMyCustomName",
-        "parameters": {
-            "$defs": {
-                "Search": {
-                    "properties": {
-                        "id": {"type": "integer"},
-                        "query": {"type": "string"},
-                    },
-                    "required": ["id", "query"],
-                    "description": "This is the search docstring",
-                    "type": "object",
-                }
-            },
-            "properties": {
-                "tasks": {
-                    "description": "Correctly segmented list of `MyCustomName` tasks",
-                    "items": {"$ref": "#/$defs/Search"},
-                    "type": "array",
-                }
-            },
-            "required": ["tasks"],
-            "type": "object",
-        },
-    }