diff --git a/test/unit/mocha.spec.js b/test/unit/mocha.spec.js
index 2de2fc4768..befb9302d4 100644
--- a/test/unit/mocha.spec.js
+++ b/test/unit/mocha.spec.js
@@ -62,12 +62,18 @@ describe('Mocha', function () {
       mocha.options.ignoreLeaks.should.equal(true);
     });
 
-    it('should set the ignoreLeaks option to true when param equals false', function () {
+    it('should set the ignoreLeaks option to false when param equals false', function () {
       var mocha = new Mocha(blankOpts);
       mocha.ignoreLeaks(false);
       mocha.options.ignoreLeaks.should.equal(false);
     });
 
+    it('should set the ignoreLeaks option to false when the param is undefined', function () {
+      var mocha = new Mocha(blankOpts);
+      mocha.ignoreLeaks();
+      mocha.options.ignoreLeaks.should.equal(false);
+    });
+
     it('should be chainable', function () {
       var mocha = new Mocha(blankOpts);
       mocha.ignoreLeaks(false).should.equal(mocha);
@@ -120,7 +126,7 @@ describe('Mocha', function () {
       mocha.options.useInlineDiffs.should.equal(true);
     });
 
-    it('should set the useInlineDiffs option to true when param equals false', function () {
+    it('should set the useInlineDiffs option to false when param equals false', function () {
       var mocha = new Mocha(blankOpts);
       mocha.useInlineDiffs(false);
       mocha.options.useInlineDiffs.should.equal(false);