diff --git a/packages/core/src/lib/create-mapper/apply-type-converters.util.ts b/packages/core/src/lib/create-mapper/apply-type-converters.util.ts
index d1ba1e9b9..4bfba500b 100644
--- a/packages/core/src/lib/create-mapper/apply-type-converters.util.ts
+++ b/packages/core/src/lib/create-mapper/apply-type-converters.util.ts
@@ -25,7 +25,7 @@ export function applyTypeConverters(
     WeakMap<PrimitiveConstructorWithDate, ValueSelector | Converter>
   >
 ): void {
-  const [, initializedProps] = mapping;
+  const [, , initializedProps] = mapping;
   for (
     let i = 0, initializedPropsLen = initializedProps.length;
     i < initializedPropsLen;
diff --git a/packages/integration-test/src/lib/with-classes/creation.spec.ts b/packages/integration-test/src/lib/with-classes/creation.spec.ts
index 65645afd7..66597d00f 100644
--- a/packages/integration-test/src/lib/with-classes/creation.spec.ts
+++ b/packages/integration-test/src/lib/with-classes/creation.spec.ts
@@ -34,7 +34,7 @@ describe('Creation', () => {
     mapper.createMap(SimpleBar, SimpleBarVm);
     expect(spiedErrorHandler).toHaveBeenNthCalledWith(
       1,
-      `Mapping for source ${SimpleBar.toString()} and destination ${SimpleBarVm.toString()} already exists`
+      `Mapping for source ${SimpleBar.name} and destination ${SimpleBarVm.name} already exists`
     );
   });