diff --git a/certbot-apache/certbot_apache/apacheparser.py b/certbot-apache/certbot_apache/apacheparser.py
index bdfb1bc7b..43328d6df 100644
--- a/certbot-apache/certbot_apache/apacheparser.py
+++ b/certbot-apache/certbot_apache/apacheparser.py
@@ -28,7 +28,7 @@ class ApacheParserNode(interfaces.ParserNode):
         """Find ancestor BlockNodes with a given name"""
         return [ApacheBlockNode(name=assertions.PASS,
                                 parameters=assertions.PASS,
-                                ancestors=self,
+                                ancestors=(self),
                                 filepath=assertions.PASS,
                                 metadata=self.metadata)]
 
@@ -101,7 +101,7 @@ class ApacheBlockNode(ApacheDirectiveNode):
         """Adds a new BlockNode to the sequence of children"""
         new_block = ApacheBlockNode(name=assertions.PASS,
                                     parameters=assertions.PASS,
-                                    ancestors=self,
+                                    ancestors=(self),
                                     filepath=assertions.PASS,
                                     metadata=self.metadata)
         self.children += (new_block,)
@@ -111,7 +111,7 @@ class ApacheBlockNode(ApacheDirectiveNode):
         """Adds a new DirectiveNode to the sequence of children"""
         new_dir = ApacheDirectiveNode(name=assertions.PASS,
                                       parameters=assertions.PASS,
-                                      ancestors=self,
+                                      ancestors=(self),
                                       filepath=assertions.PASS,
                                       metadata=self.metadata)
         self.children += (new_dir,)
@@ -122,7 +122,7 @@ class ApacheBlockNode(ApacheDirectiveNode):
 
         """Adds a new CommentNode to the sequence of children"""
         new_comment = ApacheCommentNode(comment=assertions.PASS,
-                                        ancestors=self,
+                                        ancestors=(self),
                                         filepath=assertions.PASS,
                                         metadata=self.metadata)
         self.children += (new_comment,)
@@ -132,7 +132,7 @@ class ApacheBlockNode(ApacheDirectiveNode):
         """Recursive search of BlockNodes from the sequence of children"""
         return [ApacheBlockNode(name=assertions.PASS,
                                 parameters=assertions.PASS,
-                                ancestors=self,
+                                ancestors=(self),
                                 filepath=assertions.PASS,
                                 metadata=self.metadata)]
 
@@ -140,14 +140,14 @@ class ApacheBlockNode(ApacheDirectiveNode):
         """Recursive search of DirectiveNodes from the sequence of children"""
         return [ApacheDirectiveNode(name=assertions.PASS,
                                     parameters=assertions.PASS,
-                                    ancestors=self,
+                                    ancestors=(self),
                                     filepath=assertions.PASS,
                                     metadata=self.metadata)]
 
     def find_comments(self, comment, exact=False): # pylint: disable=unused-argument
         """Recursive search of DirectiveNodes from the sequence of children"""
         return [ApacheCommentNode(comment=assertions.PASS,
-                                  ancestors=self,
+                                  ancestors=(self),
                                   filepath=assertions.PASS,
                                   metadata=self.metadata)]
 
diff --git a/certbot-apache/certbot_apache/interfaces.py b/certbot-apache/certbot_apache/interfaces.py
index e8e1b2351..da9684d6e 100644
--- a/certbot-apache/certbot_apache/interfaces.py
+++ b/certbot-apache/certbot_apache/interfaces.py
@@ -132,8 +132,8 @@ class ParserNode(object):
     ParserNode objects should have the following attributes:
 
     # Reference to ancestor node(s), empty if the node is the root node of the
-    # configuration tree. This node can have multiple ancestors in the case
-    # that it is the root of a file included by multiple files.
+    # configuration tree. This node can have multiple ancestors if it is in
+    # a file included by multiple files.
     ancestors: Tuple[ParserNode]
 
     # True if this node has been modified since last save.