diff --git a/doc/api/assert.markdown b/doc/api/assert.markdown
index 1750aed0e1d4d2..08f3b709f73932 100644
--- a/doc/api/assert.markdown
+++ b/doc/api/assert.markdown
@@ -236,16 +236,16 @@ const obj3 = {
 }
 const obj4 = Object.create(obj1);
 
-assert.deepEqual(obj1, obj1);
-  AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+assert.notDeepEqual(obj1, obj1);
+  // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
 
-assert.deepEqual(obj1, obj2);
+assert.notDeepEqual(obj1, obj2);
   // OK, obj1 and obj2 are not deeply equal
 
-assert.deepEqual(obj1, obj3);
+assert.notDeepEqual(obj1, obj3);
   // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
 
-assert.deepEqual(obj1, obj4);
+assert.notDeepEqual(obj1, obj4);
   // OK, obj1 and obj2 are not deeply equal
 ```