diff --git a/test/parallel/test-repl-envvars.js b/test/parallel/test-repl-envvars.js
index c0b1f53b3c2efc..5f597e0abb78ca 100644
--- a/test/parallel/test-repl-envvars.js
+++ b/test/parallel/test-repl-envvars.js
@@ -36,7 +36,7 @@ const tests = [
 ];
 
 function run(test) {
-  const env = Object.assign({}, process.env, test.env);
+  const env = test.env;
   const expected = test.expected;
   const opts = {
     terminal: true,