diff --git a/should/should-tests.ts b/should/should-tests.ts
index c390aa323..e88c6f144 100644
--- a/should/should-tests.ts
+++ b/should/should-tests.ts
@@ -41,7 +41,7 @@ should.not.exist({});
 
 user.should.have.property('pets').with.lengthOf(4);
 user.pets.should.have.lengthOf(4);
-user.should.be.a('object').and.have.property('name', 'tj');
+user.should.be.of.type('object').and.have.property('name', 'tj');
 
 'foo'.should.equal('bar');
 
@@ -89,8 +89,8 @@ args.should.be.arguments;
 
 user.age.should.be.within(5, 50);
 
-user.should.be.a('object');
-'test'.should.be.a('string');
+user.should.be.of.type('object');
+'test'.should.be.of.type('string');
 
 user.should.be.an.instanceof(User);
 ['a'].should.be.an.instanceOf(Array);