diff --git a/lib/dependencies/WorkerPlugin.js b/lib/dependencies/WorkerPlugin.js
index 4dd193d44..a5a51a481 100644
--- a/lib/dependencies/WorkerPlugin.js
+++ b/lib/dependencies/WorkerPlugin.js
@@ -245,9 +245,7 @@ class WorkerPlugin {
 								} else {
 									Object.assign(
 										entryOptions,
-										JSON.parse(
-											JSON.stringify(importOptions.webpackEntryOptions)
-										)
+										importOptions.webpackEntryOptions
 									);
 								}
 							}