diff --git a/config/webpack.config.prod.js b/config/webpack.config.prod.js
index d3b592fe..80a7203b 100644
--- a/config/webpack.config.prod.js
+++ b/config/webpack.config.prod.js
@@ -39,7 +39,7 @@ const extractTextPluginOptions = shouldUseRelativeAssetPaths
 
 // Enable users to turn off dead code elimination.
 const deadCodeElimination =
-  process.env.DEAD_CODE_ELIMINATION !== 'true'
+  process.env.DEAD_CODE_ELIMINATION === 'true'
     ? {
         dead_code: true,
         pure_funcs: [