diff --git a/src/config/i18n.js b/src/config/i18n.js
index b2b084f..d113ffc 100644
--- a/src/config/i18n.js
+++ b/src/config/i18n.js
@@ -1,4 +1,4 @@
-import { URL_APP_HOMEPAGE } from ".";
+const URL_APP_HOMEPAGE = "https://github.com/fishjar/kiss-translator";
 
 export const UI_LANGS = [
   ["zh", "中文"],
diff --git a/src/config/index.js b/src/config/index.js
index 1636db9..df74c6a 100644
--- a/src/config/index.js
+++ b/src/config/index.js
@@ -25,7 +25,6 @@ export const MSG_TRANS_PUTRULE = "trans_putrule";
 export const THEME_LIGHT = "light";
 export const THEME_DARK = "dark";
 
-export const URL_APP_HOMEPAGE = "https://github.com/fishjar/kiss-translator";
 export const URL_KISS_WORKER = "https://github.com/fishjar/kiss-worker";
 export const URL_RAW_PREFIX =
   "https://raw.githubusercontent.com/fishjar/kiss-translator/master";
diff --git a/src/views/Options/Rules.js b/src/views/Options/Rules.js
index 376438b..d133c60 100644
--- a/src/views/Options/Rules.js
+++ b/src/views/Options/Rules.js
@@ -163,7 +163,9 @@ function RuleFields({ rule, rules, setShow }) {
                 onChange={handleChange}
               >
                 {OPT_TRANS_ALL.map((item) => (
-                  <MenuItem value={item}>{item}</MenuItem>
+                  <MenuItem key={item} value={item}>
+                    {item}
+                  </MenuItem>
                 ))}
               </TextField>
             </Grid>
@@ -179,7 +181,7 @@ function RuleFields({ rule, rules, setShow }) {
                 onChange={handleChange}
               >
                 {OPT_LANGS_FROM.map(([lang, name]) => (
-                  <MenuItem value={lang}>{name}</MenuItem>
+                  <MenuItem key={lang} value={lang}>{name}</MenuItem>
                 ))}
               </TextField>
             </Grid>
@@ -195,7 +197,7 @@ function RuleFields({ rule, rules, setShow }) {
                 onChange={handleChange}
               >
                 {OPT_LANGS_TO.map(([lang, name]) => (
-                  <MenuItem value={lang}>{name}</MenuItem>
+                  <MenuItem key={lang} value={lang}>{name}</MenuItem>
                 ))}
               </TextField>
             </Grid>
@@ -211,7 +213,7 @@ function RuleFields({ rule, rules, setShow }) {
                 onChange={handleChange}
               >
                 {OPT_STYLE_ALL.map((item) => (
-                  <MenuItem value={item}>{i18n(item)}</MenuItem>
+                  <MenuItem key={item} value={item}>{i18n(item)}</MenuItem>
                 ))}
               </TextField>
             </Grid>
diff --git a/src/views/Options/Setting.js b/src/views/Options/Setting.js
index bb501c0..bcde5f1 100644
--- a/src/views/Options/Setting.js
+++ b/src/views/Options/Setting.js
@@ -45,7 +45,9 @@ export default function Settings() {
             }}
           >
             {UI_LANGS.map(([lang, name]) => (
-              <MenuItem value={lang}>{name}</MenuItem>
+              <MenuItem key={lang} value={lang}>
+                {name}
+              </MenuItem>
             ))}
           </Select>
         </FormControl>
diff --git a/src/views/Popup/index.js b/src/views/Popup/index.js
index 1fe07ad..bc172ce 100644
--- a/src/views/Popup/index.js
+++ b/src/views/Popup/index.js
@@ -90,7 +90,7 @@ export default function Popup() {
           onChange={handleChange}
         >
           {OPT_TRANS_ALL.map((item) => (
-            <MenuItem value={item}>{item}</MenuItem>
+            <MenuItem key={item} value={item}>{item}</MenuItem>
           ))}
         </TextField>
 
@@ -103,7 +103,7 @@ export default function Popup() {
           onChange={handleChange}
         >
           {OPT_LANGS_FROM.map(([lang, name]) => (
-            <MenuItem value={lang}>{name}</MenuItem>
+            <MenuItem key={lang} value={lang}>{name}</MenuItem>
           ))}
         </TextField>
 
@@ -116,7 +116,7 @@ export default function Popup() {
           onChange={handleChange}
         >
           {OPT_LANGS_TO.map(([lang, name]) => (
-            <MenuItem value={lang}>{name}</MenuItem>
+            <MenuItem key={lang} value={lang}>{name}</MenuItem>
           ))}
         </TextField>
 
@@ -129,7 +129,7 @@ export default function Popup() {
           onChange={handleChange}
         >
           {OPT_STYLE_ALL.map((item) => (
-            <MenuItem value={item}>{i18n(item)}</MenuItem>
+            <MenuItem key={item} value={item}>{i18n(item)}</MenuItem>
           ))}
         </TextField>