diff --git a/lib/WebpackConfig.js b/lib/WebpackConfig.js
index f1bcd244..1d85e00a 100644
--- a/lib/WebpackConfig.js
+++ b/lib/WebpackConfig.js
@@ -755,7 +755,7 @@ class WebpackConfig {
         }
 
         // Add configured entrypoints
-        const controllersData = JSON.parse(fs.readFileSync(controllerJsonPath));
+        const controllersData = JSON.parse(fs.readFileSync(controllerJsonPath, 'utf8'));
         const rootDir = path.dirname(path.resolve(controllerJsonPath));
 
         for (let name in controllersData.entrypoints) {