diff --git a/webpack.config.js b/webpack.config.js
index ef3af86bdf..23db22890b 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -11,16 +11,18 @@ if (!og_image_url) og_image_url = 'https://app.element.io/themes/element/img/log
 module.exports = (env, argv) => {
     if (process.env.CI_PACKAGE) {
         // Don't run minification for CI builds (this is only set for runs on develop)
+        // We override this via environment variable to avoid duplicating the scripts
+        // in `package.json` just for a different mode.
         argv.mode = "development";
     }
 
     const development = {};
-    if (argv.mode !== "production") {
+    if (argv.mode === "production") {
+        development['devtool'] = 'nosources-source-map';
+    } else {
         // This makes the sourcemaps human readable for developers. We use eval-source-map
         // because the plain source-map devtool ruins the alignment.
         development['devtool'] = 'eval-source-map';
-    } else {
-        development['devtool'] = 'nosources-source-map';
     }
 
     // Resolve the directories for the react-sdk and js-sdk for later use. We resolve these early so we