diff --git a/lib/validate.js b/lib/validate.js
index 82b66da..5deb3f3 100644
--- a/lib/validate.js
+++ b/lib/validate.js
@@ -54,8 +54,6 @@ const isType = (value, type) => {
     return isArray(value);
   } else if (type === Object) {
     return isObject(value);
-  } else if (type === undefined || null) {
-    throw new Error(`Unsupported type: ${type}`);
   } else if (type.documentClass && type.documentClass() === 'document') {
     return isDocument(value) || Client().isNativeId(value);
   } else if (type.documentClass && type.documentClass() === 'embedded') {
diff --git a/test/validations.test.js b/test/validations.test.js
index e8a483b..ff12713 100644
--- a/test/validations.test.js
+++ b/test/validations.test.js
@@ -3,7 +3,8 @@
 /* global describe it */
 
 const { expect } = require('chai');
-const { isType, isSupportedType } = require('../lib/validate');
+const { EmbeddedDocument } = require('../lib/index.js');
+const { isType, isSupportedType, isValidType } = require('../lib/validate');
 
 describe('Validation Utility Tests', () => {
   it('should throw an error if the type is unsupported', () =>
@@ -12,8 +13,19 @@ describe('Validation Utility Tests', () => {
   describe('Type Detection', () => {
     let array = ['one', 'two', 'three'];
     it('should detect Arrays', () => expect(isType(array, Array)).to.be.true);
+    it('should detect Embedded Documents', () => {
+      class EmbeddedDoc extends EmbeddedDocument {
+        constructor() {
+          super();
+          this.schema({});
+        }
+      }
+      const embedded = new EmbeddedDoc();
+      return expect(isType(embedded, EmbeddedDoc)).to.be.true;
+    });
     it('should reject undefined', () =>
-      expect(() => isType(undefined, undefined)).to.throw);
+      expect(() => isType(undefined, undefined)).to.throw());
+    it('should reject null', () => expect(() => isType(null, null)).to.throw);
   });
 
   describe('Supported Type Detection', () => {
@@ -28,4 +40,8 @@ describe('Validation Utility Tests', () => {
     it('should support booleans', () =>
       expect(isSupportedType(Boolean)).to.be.true);
   });
+
+  describe('it rejects multiple types on one property', () => {
+    return expect(() => isValidType(1, [Number, String])).to.throw();
+  });
 });