diff --git a/__tests__/property-extractor.test.ts b/__tests__/property-extractor.test.ts
index 3487f6e..9364698 100644
--- a/__tests__/property-extractor.test.ts
+++ b/__tests__/property-extractor.test.ts
@@ -15,7 +15,7 @@ describe("Property Extractor", () => {
       expect(async () => {
         await PropertyExtractor.getPropertyListForObject(badObj);
       }).rejects.toEqual(
-          'The given object does not have a "getDynamicProperties" method. Can not process property list.',
+          new Error('The given object does not have a "getDynamicProperties" method. Can not process property list.'),
       );
     });
 
diff --git a/src/property-extractor.ts b/src/property-extractor.ts
index 6be971e..36da62a 100644
--- a/src/property-extractor.ts
+++ b/src/property-extractor.ts
@@ -9,7 +9,7 @@ import { Property } from "./property";
  */
 async function getPropertyListForObject(obj: any): Promise<Array<Property>> {
   if (!obj.hasOwnProperty("getDynamicProperties")) {
-    await Promise.reject('The given object does not have a "getDynamicProperties" method. Can not process property list.');
+    await Promise.reject(new Error('The given object does not have a "getDynamicProperties" method. Can not process property list.'));
   }
 
   return await obj.getDynamicProperties();