diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index 2152b3826..ea64d1170 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -515,7 +515,7 @@ jobs:
     - name: Run all tests
       if: ${{ matrix.NODE_PACKAGE_TESTS_ONLY != 'ON' && matrix.ENABLE_APPLE_SILICON != 'ON' }}
       run: |
-        ulimit -n 10240
+        # ulimit -n 10240
         
         make -C test/data benchmark
 
diff --git a/test/nodejs/index.js b/test/nodejs/index.js
index 9a1f9da67..1e31dacd9 100644
--- a/test/nodejs/index.js
+++ b/test/nodejs/index.js
@@ -145,34 +145,14 @@ test('constructor: throws on invalid custom limits', function(assert) {
 
 test('constructor: takes a default_radius argument', function(assert) {
     assert.plan(1);
-    assert.throws(function() {
-        var osrm = new OSRM({
-            path: monaco_mld_path,
-            algorithm: 'MLD',
-            max_locations_trip: 'unlimited',
-            max_locations_viaroute: true,
-            max_locations_distance_table: false,
-            max_locations_map_matching: 'a lot',
-            max_results_nearest: null,
-            max_alternatives: '10'
-        })
-    });
+    var osrm = new OSRM({path: monaco_mld_path, algorithm: 'MLD', max_alternatives: 1});
+    assert.ok(osrm);
 });
 
 test('constructor: throws if default_radius is not a number', function(assert) {
-    assert.plan(1);
-    assert.throws(function() {
-        var osrm = new OSRM({
-            path: monaco_mld_path,
-            algorithm: 'MLD',
-            max_locations_trip: 'unlimited',
-            max_locations_viaroute: true,
-            max_locations_distance_table: false,
-            max_locations_map_matching: 'a lot',
-            max_results_nearest: null,
-            max_alternatives: '10'
-        })
-    });
+    assert.plan(2);
+    assert.throws(function() { new OSRM({path: monaco_mld_path, algorithm: 'MLD', max_alternatives: 'abc'}); }, /default_radius must be an integral number/, 'Does not accept string');
+    assert.ok(new OSRM({max_alternatives: 1}), 'Does accept number');
 });
 
 require('./route.js');