diff --git a/cache_helper/interfaces.py b/cache_helper/interfaces.py
index efcedd2..bfa5059 100644
--- a/cache_helper/interfaces.py
+++ b/cache_helper/interfaces.py
@@ -1,8 +1,4 @@
-import abc
-
-
-class CacheHelperCacheable(abc.ABC):
-    @abc.abstractmethod
+class CacheHelperCacheable:
     def get_cache_helper_key(self):
         """
         For any two objects of the same class which are considered equal in your application,
@@ -10,4 +6,4 @@ def get_cache_helper_key(self):
         considered equal. This key will be used as a component to the final cache key to get/set
         values from the cache. The key should be a string.
         """
-        pass
+        raise NotImplementedError