diff --git a/features/options/routed/help.feature b/features/options/routed/help.feature
index a581be3fe..bab61ef09 100644
--- a/features/options/routed/help.feature
+++ b/features/options/routed/help.feature
@@ -22,6 +22,7 @@ Feature: osrm-routed command line options: help
         And stdout should contain "--max-trip-size"
         And stdout should contain "--max-table-size"
         And stdout should contain "--max-matching-size"
+        And stdout should contain "--default-bearings-radius"
         And it should exit successfully
 
     Scenario: osrm-routed - Help, short
@@ -42,6 +43,7 @@ Feature: osrm-routed command line options: help
         And stdout should contain "--max-trip-size"
         And stdout should contain "--max-table-size"
         And stdout should contain "--max-matching-size"
+        And stdout should contain "--default-bearings-radius"
         And it should exit successfully
 
     Scenario: osrm-routed - Help, long
@@ -62,4 +64,5 @@ Feature: osrm-routed command line options: help
         And stdout should contain "--max-table-size"
         And stdout should contain "--max-table-size"
         And stdout should contain "--max-matching-size"
+        And stdout should contain "--default-bearings-radius"
         And it should exit successfully
diff --git a/test/nodejs/index.js b/test/nodejs/index.js
index e37fd019b..779505ec2 100644
--- a/test/nodejs/index.js
+++ b/test/nodejs/index.js
@@ -118,6 +118,12 @@ test('constructor: takes a default_bearing_radius argument', function(assert) {
     assert.ok(osrm);
 });
 
+test('constructor: throws if default_bearing_radius is not a number', function(assert) {
+    assert.plan(2);
+    assert.throws(function() { new OSRM({default_bearing_radius: 'abc'}); }, /default_bearing_radius must be an integral number/, 'Does not accept string');
+    assert.ok(new OSRM({default_bearing_radius: 1}), 'Does accept number');
+});
+
 test('constructor: parses custom limits', function(assert) {
     assert.plan(1);
     var osrm = new OSRM({