diff --git a/tests/unit/server/api/test_subscriptions.py b/tests/unit/server/api/test_subscriptions.py
index a17feebf99..9d64f3a972 100644
--- a/tests/unit/server/api/test_subscriptions.py
+++ b/tests/unit/server/api/test_subscriptions.py
@@ -529,7 +529,7 @@ async def test_openai_tool_call_response_emits_expected_payloads_and_records_exp
         assert "content" not in output_message
         assert (tool_calls := output_message["tool_calls"])
         assert len(tool_calls) == 1
-        assert (tool_call := tool_calls.popitem()[-1]["tool_call"])
+        assert (tool_call := tool_calls[0]["tool_call"])
         assert (function := tool_call["function"])
         assert function["name"] == "get_current_weather"
         assert json.loads(function["arguments"]) == {"location": "San Francisco"}