diff --git a/lib/schema.js b/lib/schema.js
index b02ec83109f..1461a95ac3a 100644
--- a/lib/schema.js
+++ b/lib/schema.js
@@ -936,6 +936,7 @@ Schema.prototype.interpretAsType = function(path, obj, options) {
         if (options.hasOwnProperty('typePojoToMixed')) {
           childSchemaOptions.typePojoToMixed = options.typePojoToMixed;
         }
+
         if (this._userProvidedOptions.hasOwnProperty('_id')) {
           childSchemaOptions._id = this._userProvidedOptions._id;
         } else if (Schema.Types.DocumentArray.defaultOptions &&
diff --git a/lib/schema/SingleNestedPath.js b/lib/schema/SingleNestedPath.js
index dc7f11ec5f8..5b54e9a86ea 100644
--- a/lib/schema/SingleNestedPath.js
+++ b/lib/schema/SingleNestedPath.js
@@ -316,6 +316,8 @@ SingleNestedPath.prototype.discriminator = function(name, schema, value) {
  * @api public
  */
 
+SingleNestedPath.defaultOptions = {};
+
 SingleNestedPath.set = SchemaType.set;
 
 /*!
diff --git a/lib/schema/documentarray.js b/lib/schema/documentarray.js
index c263fd66255..81ee5f79405 100644
--- a/lib/schema/documentarray.js
+++ b/lib/schema/documentarray.js
@@ -526,6 +526,8 @@ function scopePaths(array, fields, init) {
  * @api public
  */
 
+DocumentArrayPath.defaultOptions = {};
+
 DocumentArrayPath.set = SchemaType.set;
 
 /*!
diff --git a/test/schema.documentarray.test.js b/test/schema.documentarray.test.js
index 70d35378510..89937a538d1 100644
--- a/test/schema.documentarray.test.js
+++ b/test/schema.documentarray.test.js
@@ -112,6 +112,6 @@ describe('schema.documentarray', function() {
     assert.equal(doc.arr.length, 1);
     assert.ok(!doc.arr[0]._id);
 
-    mongoose.Schema.Types.DocumentArray.set('_id', true);
+    mongoose.Schema.Types.DocumentArray.defaultOptions = {};
   });
 });
diff --git a/test/schema.test.js b/test/schema.test.js
index bbb82886605..462ce6c7bee 100644
--- a/test/schema.test.js
+++ b/test/schema.test.js
@@ -2001,13 +2001,13 @@ describe('schema', function() {
       });
 
       assert.equal(schema.childSchemas.length, 2);
-      assert.equal(schema.childSchemas[0].schema, schema1);
-      assert.equal(schema.childSchemas[1].schema, schema2);
+      assert.strictEqual(schema.childSchemas[0].schema, schema1);
+      assert.strictEqual(schema.childSchemas[1].schema, schema2);
 
       schema = schema.clone();
       assert.equal(schema.childSchemas.length, 2);
-      assert.equal(schema.childSchemas[0].schema, schema1);
-      assert.equal(schema.childSchemas[1].schema, schema2);
+      assert.strictEqual(schema.childSchemas[0].schema, schema1);
+      assert.strictEqual(schema.childSchemas[1].schema, schema2);
 
       done();
     });