diff --git a/packages/react-scripts/config/env.js b/packages/react-scripts/config/env.js
index 0ad47cb9779..f677ee599d1 100644
--- a/packages/react-scripts/config/env.js
+++ b/packages/react-scripts/config/env.js
@@ -97,7 +97,7 @@ function getClientEnvironment(publicUrl) {
         // react-refresh is not 100% stable at this time,
         // which is why it's disabled by default.
         // It is defined here so it is available in the webpackHotDevClient.
-        FAST_REFRESH: process.env.FAST_REFRESH !== 'false',
+        FAST_REFRESH: process.env.FAST_REFRESH === 'true',
       }
     );
   // Stringify all values so we can feed into webpack DefinePlugin