add missing @ to immutable invocation

diff --git a/dns/node.py b/dns/node.py
index b8141c425726f917c448064a1de6dd02c32c4dd0..b3f57859d39addcb00b95471e2f0732e2c3d7c28 100644 (file)
--- a/dns/node.py
+++ b/dns/node.py
@@ -290,7 +290,7 @@ class Node:
         return False
 
 
-dns.immutable.immutable
+@dns.immutable.immutable
 class ImmutableNode(Node):
     def __init__(self, node):
         super().__init__()