diff --git a/benchmark/misc/util-extend-vs-object-assign.js b/benchmark/misc/util-extend-vs-object-assign.js
index 149619f6e1dea3..3880711b660fe1 100644
--- a/benchmark/misc/util-extend-vs-object-assign.js
+++ b/benchmark/misc/util-extend-vs-object-assign.js
@@ -9,6 +9,10 @@ const bench = common.createBenchmark(main, {
 });
 
 function main({ n, type }) {
+  // Default value for tests.
+  if (type === '')
+    type = 'extend';
+
   let fn;
   if (type === 'extend') {
     fn = util._extend;
diff --git a/test/parallel/test-benchmark-misc.js b/test/parallel/test-benchmark-misc.js
index 96b3fe1fa2ed5a..fc7e340a80d0bb 100644
--- a/test/parallel/test-benchmark-misc.js
+++ b/test/parallel/test-benchmark-misc.js
@@ -9,6 +9,6 @@ runBenchmark('misc', [
   'dur=0.1',
   'method=',
   'n=1',
-  'type=extend',
-  'val=magyarország.icom.museum'
+  'type=',
+  'val=magyarország.icom.museum',
 ], { NODEJS_BENCHMARK_ZERO_ALLOWED: 1 });