diff --git a/optuna_dashboard/ts/components/GraphSlice.tsx b/optuna_dashboard/ts/components/GraphSlice.tsx
index 058a09e7..7206e23b 100644
--- a/optuna_dashboard/ts/components/GraphSlice.tsx
+++ b/optuna_dashboard/ts/components/GraphSlice.tsx
@@ -4,7 +4,6 @@ import {
   Grid,
   FormControl,
   FormLabel,
-  InputLabel,
   MenuItem,
   Switch,
   Select,
@@ -78,7 +77,7 @@ export const GraphSlice: FC<{
         <Typography variant="h6" sx={{ margin: "1em 0", fontWeight: 600 }}>
           Slice
         </Typography>
-        {study !== null && study.directions.length !== 1 ? (
+        {study !== null && study.directions.length !== 1 && (
           <FormControl component="fieldset">
             <FormLabel component="legend">Objective ID:</FormLabel>
             <Select value={objectiveId} onChange={handleObjectiveChange}>
@@ -89,9 +88,9 @@ export const GraphSlice: FC<{
               ))}
             </Select>
           </FormControl>
-        ) : null}
+        )}
         <FormControl component="fieldset">
-          <InputLabel id="parameter">Parameter</InputLabel>
+          <FormLabel component="legend">Parameter:</FormLabel>
           <Select value={selected || ""} onChange={handleSelectedParam}>
             {paramNames?.map((p, i) => (
               <MenuItem value={p} key={i}>
diff --git a/optuna_dashboard/ts/components/Note.tsx b/optuna_dashboard/ts/components/Note.tsx
index 82176327..51c9a4cf 100644
--- a/optuna_dashboard/ts/components/Note.tsx
+++ b/optuna_dashboard/ts/components/Note.tsx
@@ -74,7 +74,7 @@ export const Note: FC<{
           disabled={saving}
           minRows={5}
           multiline={true}
-          placeholder="Take a note (The note is saved to study's system_attrs)"
+          placeholder="Description about the study... (This note is saved to study's system_attrs)"
           sx={{ width: "100%", margin: `${theme.spacing(1)} 0` }}
           inputProps={{ style: { resize: "vertical" } }}
           inputRef={textAreaRef}