diff --git a/volatility3/framework/interfaces/objects.py b/volatility3/framework/interfaces/objects.py
index 3cc23e759..d1f442d69 100644
--- a/volatility3/framework/interfaces/objects.py
+++ b/volatility3/framework/interfaces/objects.py
@@ -243,11 +243,10 @@ class ObjectInterface(metaclass = abc.ABCMeta):
 
         @classmethod
         @abc.abstractmethod
-        def child_template(cls, template: 'Template', child: str) -> interfaces.objects.Template:
+        def child_template(cls, template: 'Template', child: str) -> 'interfaces.objects.Template':
             """Returns the template of the child member from the parent."""
             raise KeyError(f"Template does not contain any children: {template.vol.type_name}")
 
-
         @classmethod
         @abc.abstractmethod
         def has_member(cls, template: 'Template', member_name: str) -> bool: