diff --git a/src/registry.py b/src/registry.py
index ef4cef4e2..4fb46b1c9 100644
--- a/src/registry.py
+++ b/src/registry.py
@@ -217,6 +217,8 @@ class Group(object):
             node = self.children[name]
             del self.children[name]
             self.added.remove(name)
+            if node._name in _cache:
+                del _cache[node._name]
             return node
         except KeyError:
             self.__nonExistentEntry(name)