diff --git a/optuna_dashboard/ts/components/BestTrialsCard.tsx b/optuna_dashboard/ts/components/BestTrialsCard.tsx
index f228fe52..cb560921 100644
--- a/optuna_dashboard/ts/components/BestTrialsCard.tsx
+++ b/optuna_dashboard/ts/components/BestTrialsCard.tsx
@@ -32,22 +32,23 @@ export const BestTrialsCard: FC<{
     header = `Best Trial (number=${bestTrial.number})`
     content = (
       <>
-        {bestTrial.values === undefined || bestTrial.values.length === 1 ? (
-          <Typography
-            variant="h3"
-            sx={{
-              fontWeight: theme.typography.fontWeightBold,
-              marginBottom: theme.spacing(2),
-            }}
-            color="secondary"
-          >
-            {bestTrial.values}
-          </Typography>
-        ) : (
-          <Typography>
-            Objective Values = [{bestTrial.values?.join(", ")}]
-          </Typography>
-        )}
+        {!studyDetail?.is_preferential &&
+          (bestTrial.values === undefined || bestTrial.values.length === 1 ? (
+            <Typography
+              variant="h3"
+              sx={{
+                fontWeight: theme.typography.fontWeightBold,
+                marginBottom: theme.spacing(2),
+              }}
+              color="secondary"
+            >
+              {bestTrial.values}
+            </Typography>
+          ) : (
+            <Typography>
+              Objective Values = [{bestTrial.values?.join(", ")}]
+            </Typography>
+          ))}
         <Typography>
           Params = [
           {bestTrial.params