diff --git a/mlos_bench/mlos_bench/environments/local/local_env.py b/mlos_bench/mlos_bench/environments/local/local_env.py
index 38a09c72d1..2f72fc1f16 100644
--- a/mlos_bench/mlos_bench/environments/local/local_env.py
+++ b/mlos_bench/mlos_bench/environments/local/local_env.py
@@ -155,7 +155,7 @@ def run(self) -> Tuple[Status, Optional[dict]]:
                     self._read_results_file, extra_paths=[temp_dir]))
 
             _LOG.debug("Read data:\n%s", data)
-            if len(data) != 1:
+            if list(data.columns) == ["metric", "value"]:
                 _LOG.warning(
                     "Local run has %d rows: assume long format of (metric, value)", len(data))
                 data = pandas.DataFrame([data.value.to_list()], columns=data.metric.to_list())