diff --git a/webui/src/components/Header/Header.tsx b/webui/src/components/Header/Header.tsx
index 56b359681ed33145dbb7f5a445ef2e38dc7bed39..866e52db03a6c2ef08d9e6b975802f1834aa0dff 100644
--- a/webui/src/components/Header/Header.tsx
+++ b/webui/src/components/Header/Header.tsx
@@ -6,7 +6,7 @@ import Tab, { TabProps } from '@material-ui/core/Tab';
 import Tabs from '@material-ui/core/Tabs';
 import Toolbar from '@material-ui/core/Toolbar';
 import Tooltip from '@material-ui/core/Tooltip/Tooltip';
-import { makeStyles } from '@material-ui/core/styles';
+import { fade, makeStyles } from '@material-ui/core/styles';
 
 import CurrentIdentity from '../Identity/CurrentIdentity';
 import { LightSwitch } from '../Themer';
@@ -30,7 +30,8 @@ const useStyles = makeStyles((theme) => ({
     alignItems: 'center',
   },
   lightSwitch: {
-    padding: '0 20px',
+    marginRight: '20px',
+    color: fade(theme.palette.primary.contrastText, 0.5),
   },
   logo: {
     height: '42px',
@@ -85,9 +86,7 @@ function Header() {
             git-bug
           </Link>
           <div className={classes.filler} />
-          <div className={classes.lightSwitch}>
-            <LightSwitch />
-          </div>
+          <LightSwitch className={classes.lightSwitch} />
           <CurrentIdentity />
         </Toolbar>
       </AppBar>
diff --git a/webui/src/components/Themer.tsx b/webui/src/components/Themer.tsx
index b487797487011a86e24d8353594469e4c6fa4f0d..edf1f35208b3f98c4e6585424e1d132f6d8069d9 100644
--- a/webui/src/components/Themer.tsx
+++ b/webui/src/components/Themer.tsx
@@ -1,35 +1,30 @@
 import React, { createContext, useContext, useState } from 'react';
 
-import { fade, ThemeProvider } from '@material-ui/core';
-import IconButton from '@material-ui/core/IconButton/IconButton';
-import Tooltip from '@material-ui/core/Tooltip/Tooltip';
+import { ThemeProvider } from '@material-ui/core';
+import IconButton from '@material-ui/core/IconButton';
+import Tooltip from '@material-ui/core/Tooltip';
 import { Theme } from '@material-ui/core/styles';
 import { NightsStayRounded, WbSunnyRounded } from '@material-ui/icons';
-import { makeStyles } from '@material-ui/styles';
 
 const ThemeContext = createContext({
   toggleMode: () => {},
   mode: '',
 });
 
-const useStyles = makeStyles((theme: Theme) => ({
-  iconButton: {
-    color: fade(theme.palette.primary.contrastText, 0.5),
-  },
-}));
-
-const LightSwitch = () => {
+type LightSwitchProps = {
+  className?: string;
+};
+const LightSwitch = ({ className }: LightSwitchProps) => {
   const { mode, toggleMode } = useContext(ThemeContext);
   const nextMode = mode === 'light' ? 'dark' : 'light';
   const description = `Switch to ${nextMode} theme`;
-  const classes = useStyles();
 
   return (
     <Tooltip title={description}>
       <IconButton
         onClick={toggleMode}
         aria-label={description}
-        className={classes.iconButton}
+        className={className}
       >
         {mode === 'light' ? <WbSunnyRounded /> : <NightsStayRounded />}
       </IconButton>