diff --git a/llm/cli.py b/llm/cli.py
index 73847e1..38e1e33 100644
--- a/llm/cli.py
+++ b/llm/cli.py
@@ -908,10 +908,12 @@ def prompt(
                 err=True,
             )
 
-    # Log to the database
+    # Log responses to the database
     if (logs_on() or log) and not no_log:
+        # Could be Response, AsyncResponse, ChainResponse, AsyncChainResponse
         if isinstance(response, AsyncResponse):
             response = asyncio.run(response.to_sync_response())
+        # At this point ALL forms should have a log_to_db() method that works:
         response.log_to_db(db)
 
 
diff --git a/llm/models.py b/llm/models.py
index 9afbe97..bebe0a8 100644
--- a/llm/models.py
+++ b/llm/models.py
@@ -557,6 +557,16 @@ class AsyncConversation(_BaseConversation):
             key=key,
         )
 
+    def to_sync_conversation(self):
+        return Conversation(
+            model=self.model,
+            id=self.id,
+            name=self.name,
+            responses=[],  # Because we only use this in logging
+            tools=self.tools,
+            chain_limit=self.chain_limit,
+        )
+
     @classmethod
     def from_row(cls, row):
         from llm import get_async_model
@@ -1403,10 +1413,7 @@ class AsyncResponse(_BaseResponse):
             self.stream,
             # conversation type needs to be compatible too.
             conversation=(
-                self.conversation.to_sync_conversation()
-                if self.conversation
-                and hasattr(self.conversation, "to_sync_conversation")
-                else None
+                self.conversation.to_sync_conversation() if self.conversation else None
             ),
         )
         response.id = self.id
diff --git a/tests/test_tools.py b/tests/test_tools.py
index e803a49..6fd7070 100644
--- a/tests/test_tools.py
+++ b/tests/test_tools.py
@@ -393,7 +393,7 @@ def trigger_error(msg: str):
 """
 
 
-@pytest.mark.parametrize("async_", [False])  # Add True again
+@pytest.mark.parametrize("async_", (False, True))
 def test_tool_errors(async_):
     # https://github.com/simonw/llm/issues/1107
     runner = CliRunner()