diff --git a/src/include/Reflection/ReflectionProperty_impl.h b/src/include/Reflection/ReflectionProperty_impl.h
index 0b13283..45d8b4f 100644
--- a/src/include/Reflection/ReflectionProperty_impl.h
+++ b/src/include/Reflection/ReflectionProperty_impl.h
@@ -41,4 +41,9 @@ void ReflectionProperty<T>::dispose()
 {
 	delete value;
 	value = NULL;
+	if(this->extData != NULL)
+	{
+		delete extData;
+		extData = NULL;
+	}
 }
\ No newline at end of file