diff --git a/envoy.docs.abstract/envoy/docs/abstract/utils.py b/envoy.docs.abstract/envoy/docs/abstract/utils.py
index 86ac7ebbf..23559fe53 100644
--- a/envoy.docs.abstract/envoy/docs/abstract/utils.py
+++ b/envoy.docs.abstract/envoy/docs/abstract/utils.py
@@ -476,7 +476,7 @@ def pb_field_cross_ref_label(self, field_name):
 
     def hide_not_implemented(self, comment):
         """Should a given type_context.Comment be hidden because it is tagged as [#not-implemented-hide:]?"""
-        return self.not_implemented_hide_annotation in comment.annotations
+        return self.annotations.NOT_IMPLENTED_HIDE in comment.annotations
 
     def pb_comment_with_annotations(self, comment, type_name=''):
         """Format a comment string with additional RST for annotations."""