diff --git a/flaml/ml.py b/flaml/ml.py
index c5054ca5a..0dc597e17 100644
--- a/flaml/ml.py
+++ b/flaml/ml.py
@@ -541,7 +541,6 @@ def evaluate_model_CV(
         total_fold_num += 1
         val_loss_folds.append(val_loss_i)
         if log_training_metric or not isinstance(eval_metric, str):
-            if isinstance(metric_i, dict):
                 log_metric_folds.append(metric_i)
         train_time += train_time_i
         pred_time += pred_time_i