diff --git a/src/main/core/view.js b/src/main/core/view.js
index ccc14894..02da27bf 100644
--- a/src/main/core/view.js
+++ b/src/main/core/view.js
@@ -7,18 +7,13 @@
 import dom from "../lib/dom";
 import template from "../lib/template";
 
-const STYLES_SCROLL = "border-radius: 5px 0px 0px 5px;";
-const STYLES_NORMAL = "border-radius: 5px 5px 5px 5px;";
-
 const createDialogElement = (settings) => {
-  const systemStyles = settings.scroll === "scroll" ? STYLES_SCROLL : STYLES_NORMAL;
-
   const html = template.render(settings.dialogTemplate, {
-    systemStyles,
+    systemStyles: "border-radius: 5px 0px 0px 5px;", // For backward compatibility
     backgroundColor: settings.backgroundColor,
     width: settings.width,
     height: settings.height,
-    scroll: settings.scroll,
+    scroll: "scroll", // For backward compatibility
   });
   const dialog = dom.create(html);
   dom.applyStyles(dialog, settings.normalDialogStyles);
diff --git a/src/main/settings.js b/src/main/settings.js
index 1636bb07..d7e8b6e4 100644
--- a/src/main/settings.js
+++ b/src/main/settings.js
@@ -10,7 +10,6 @@ export default {
   parseWordsLimit: 8,
   lookupWithCapitalized: false,
   initialPosition: "right",
-  scroll: "scroll",
   skipPdfConfirmation: false,
   pdfUrl: "",
   backgroundColor: "#ffffff",
@@ -60,12 +59,12 @@ export default {
 
   dialogTemplate: `<div class="notranslate"
      style="all:initial;
-            {{systemStyles}}
+            border-radius: 5px 0px 0px 5px;
             width: {{width}}px;
             height: {{height}}px;
             position: fixed;
             overflow-x: hidden;
-            overflow-y: {{scroll}};
+            overflow-y: scroll;
             top: 5px;
             background-color: {{backgroundColor}};
             z-index: 2147483646;
diff --git a/src/options/component/organism/BasicSettings.tsx b/src/options/component/organism/BasicSettings.tsx
index 441555fd..8733dd1f 100644
--- a/src/options/component/organism/BasicSettings.tsx
+++ b/src/options/component/organism/BasicSettings.tsx
@@ -10,7 +10,7 @@ import { produce } from "immer";
 import { res } from "../../logic";
 import { env } from "../../extern";
 import { Select } from "../atom/Select";
-import { MouseDictionaryBasicSettings, UpdateEventHandler, InitialPosition, Scroll } from "../../types";
+import { MouseDictionaryBasicSettings, UpdateEventHandler, InitialPosition } from "../../types";
 
 type Props = {
   settings: MouseDictionaryBasicSettings;
@@ -48,11 +48,6 @@ export const BasicSettings: React.FC<Props> = (props) => {
     });
   }
 
-  const scrolls = [
-    { name: res.get("scrollOn"), value: "scroll" },
-    { name: res.get("scrollOff"), value: "hidden" },
-  ];
-
   const update = (patch: Partial<MouseDictionaryBasicSettings>) => {
     const newPatch = produce(patch, (d) => {
       for (const name of Object.keys(patch)) {
@@ -108,14 +103,6 @@ export const BasicSettings: React.FC<Props> = (props) => {
           onChange={(value) => update({ initialPosition: value as InitialPosition })}
         />
 
-        <label>{res.get("scrollBar")}</label>
-        <Select
-          value={settings.scroll}
-          options={scrolls}
-          style={{ width: 250 }}
-          onChange={(value) => update({ scroll: value as Scroll })}
-        />
-
         <br />
 
         <h3>{res.get("colorAndFont")}</h3>
diff --git a/src/options/page/Main.tsx b/src/options/page/Main.tsx
index f118fc36..c84de414 100644
--- a/src/options/page/Main.tsx
+++ b/src/options/page/Main.tsx
@@ -92,7 +92,7 @@ export const Main: React.FC = () => {
       refPreview.current = new Preview(s);
     }
     refPreview.current?.update(s, state.previewText, true);
-  }, [s.scroll, s.backgroundColor, s.dialogTemplate, s.contentWrapperTemplate]);
+  }, [s.backgroundColor, s.dialogTemplate, s.contentWrapperTemplate]);
   useEffect(() => {
     if (!state.initialized) {
       return;
diff --git a/src/options/resource/en.ts b/src/options/resource/en.ts
index 1207d6d6..6001c435 100644
--- a/src/options/resource/en.ts
+++ b/src/options/resource/en.ts
@@ -35,9 +35,6 @@ const EnglishTextResource: TextResource = {
   positionRight: "Right",
   positionKeep: "Restore the last position and size",
 
-  scrollOff: "Not available",
-  scrollOn: "Available",
-
   saveSettings: "Save settings",
   defaultSettings: "Reset to default",
   finishSaving: "Saving has finished",
@@ -58,7 +55,6 @@ const EnglishTextResource: TextResource = {
   width: "Width",
   height: "Height",
   initialPosition: "Initial position",
-  scrollBar: "Scroll bar",
   dictionaryData: "Dictionary data",
   colorAndFont: "Font size and color",
   headFont: "Header font",
diff --git a/src/options/resource/ja.ts b/src/options/resource/ja.ts
index 0b4e9a79..d26b0d5b 100644
--- a/src/options/resource/ja.ts
+++ b/src/options/resource/ja.ts
@@ -30,9 +30,6 @@ const JapaneseTextResource: TextResource = {
   positionRight: "右",
   positionKeep: "前回位置とサイズを記憶",
 
-  scrollOff: "なし",
-  scrollOn: "あり",
-
   saveSettings: "設定を保存する",
   defaultSettings: "初期状態に戻す",
   finishSaving: "保存しました。",
@@ -53,7 +50,6 @@ const JapaneseTextResource: TextResource = {
   width: "幅",
   height: "高さ",
   initialPosition: "初期表示位置",
-  scrollBar: "スクロールバー",
   dictionaryData: "辞書データ",
   colorAndFont: "色と文字サイズ",
   background: "背景",
diff --git a/src/options/resource/types.ts b/src/options/resource/types.ts
index 6ef3cf8a..ab85ba22 100644
--- a/src/options/resource/types.ts
+++ b/src/options/resource/types.ts
@@ -24,8 +24,6 @@ export type TextResource = {
   positionLeft: string;
   positionRight: string;
   positionKeep: string;
-  scrollOff: string;
-  scrollOn: string;
   saveSettings: string;
   defaultSettings: string;
   finishSaving: string;
@@ -43,7 +41,6 @@ export type TextResource = {
   width: string;
   height: string;
   initialPosition: string;
-  scrollBar: string;
   dictionaryData: string;
   colorAndFont: string;
   headFont: string;
diff --git a/src/options/types.ts b/src/options/types.ts
index 7594aae4..a67dd7f5 100644
--- a/src/options/types.ts
+++ b/src/options/types.ts
@@ -6,11 +6,8 @@
 
 export type InitialPosition = "left" | "right" | "keep";
 
-export type Scroll = "scroll" | "hidden";
-
 export type MouseDictionaryBasicSettings = {
   initialPosition: InitialPosition;
-  scroll: Scroll;
   backgroundColor: string;
   headFontColor: string;
   descFontColor: string;