diff --git a/README.md b/README.md
index c0f3e9eef..11e0fd9ce 100644
--- a/README.md
+++ b/README.md
@@ -1,32 +1,6 @@
 # Downloads
 [![Downloads](https://pepy.tech/badge/pony)](https://pepy.tech/project/pony) [![Downloads](https://pepy.tech/badge/pony/month)](https://pepy.tech/project/pony/month) [![Downloads](https://pepy.tech/badge/pony/week)](https://pepy.tech/project/pony/week)
 
-# Tests
-
-#### PostgreSQL
-Python 2 <a href="http://jenkins.agilecode.io:8111/viewType.html?buildTypeId=GithubPonyORMCi_Python2postgres&guest=1">
-<img src="http://jenkins.agilecode.io:8111/app/rest/builds/buildType:(id:GithubPonyORMCi_Python2postgres)/statusIcon"/>
-</a>
-Python 3 <a href="http://jenkins.agilecode.io:8111/viewType.html?buildTypeId=GithubPonyORMCi_Python3postgres&guest=1">
-<img src="http://jenkins.agilecode.io:8111/app/rest/builds/buildType:(id:GithubPonyORMCi_Python3postgres)/statusIcon"/>
-</a>
-
-#### SQLite
-Python 2 <a href="http://jenkins.agilecode.io:8111/viewType.html?buildTypeId=GithubPonyORMCi_Python2sqlite&guest=1">
-<img src="http://jenkins.agilecode.io:8111/app/rest/builds/buildType:(id:GithubPonyORMCi_Python2sqlite)/statusIcon"/>
-</a>
-Python 3 <a href="http://jenkins.agilecode.io:8111/viewType.html?buildTypeId=GithubPonyORMCi_Python3sqlite&guest=1">
-<img src="http://jenkins.agilecode.io:8111/app/rest/builds/buildType:(id:GithubPonyORMCi_Python3sqlite)/statusIcon"/>
-</a>
-
-#### CockroachDB
-Python 2 <a href="http://jenkins.agilecode.io:8111/viewType.html?buildTypeId=GithubPonyORMCi_Python2cockroach&guest=1">
-<img src="http://jenkins.agilecode.io:8111/app/rest/builds/buildType:(id:GithubPonyORMCi_Python2cockroach)/statusIcon"/>
-</a>
-Python 3 <a href="http://jenkins.agilecode.io:8111/viewType.html?buildTypeId=GithubPonyORMCi_Python3cockroach&guest=1">
-<img src="http://jenkins.agilecode.io:8111/app/rest/builds/buildType:(id:GithubPonyORMCi_Python3cockroach)/statusIcon"/>
-</a>
-
 
 Pony Object-Relational Mapper
 =============================
diff --git a/pony/thirdparty/compiler/ast.py b/pony/thirdparty/compiler/ast.py
index e5596d4b6..77d2a45d9 100644
--- a/pony/thirdparty/compiler/ast.py
+++ b/pony/thirdparty/compiler/ast.py
@@ -245,9 +245,7 @@ def getChildren(self):
         return tuple(flatten(self.nodes))
 
     def getChildNodes(self):
-        nodelist = []
-        nodelist.extend(flatten_nodes(self.nodes))
-        return tuple(nodelist)
+        return tuple(flatten_nodes(self.nodes))
 
     def __repr__(self):
         return "Bitor(%s)" % (repr(self.nodes),)