diff --git a/webpack.config.js b/webpack.config.js
index d88fad2567..cb8f827040 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -40,8 +40,8 @@ module.exports = (env, argv) => {
             "usercontent": "./node_modules/matrix-react-sdk/src/usercontent/index.js",
 
             // CSS themes
-            "theme-element": "./node_modules/matrix-react-sdk/res/themes/element/css/element.scss",
-            "theme-element-dark": "./node_modules/matrix-react-sdk/res/themes/element-dark/css/element-dark.scss",
+            "theme-legacy": "./node_modules/matrix-react-sdk/res/themes/legacy-light/css/legacy-light.scss",
+            "theme-legacy-dark": "./node_modules/matrix-react-sdk/res/themes/legacy-dark/css/legacy-dark.scss",
             "theme-light": "./node_modules/matrix-react-sdk/res/themes/light/css/light.scss",
             "theme-dark": "./node_modules/matrix-react-sdk/res/themes/dark/css/dark.scss",
             "theme-light-custom": "./node_modules/matrix-react-sdk/res/themes/light-custom/css/light-custom.scss",