diff --git a/certbot-nginx/certbot_nginx/nginxparser.py b/certbot-nginx/certbot_nginx/nginxparser.py
index 1de079cab..065858797 100644
--- a/certbot-nginx/certbot_nginx/nginxparser.py
+++ b/certbot-nginx/certbot_nginx/nginxparser.py
@@ -213,6 +213,16 @@ class UnspacedList(list):
         l.extend(other)
         return l
 
+    def index(self, _, _j=0, _k=0):
+        raise NotImplementedError("UnspacedList.index() not yet implemented")
+    def pop(self, _):
+        raise NotImplementedError("UnspacedList.pop() not yet implemented")
+    def remove(self, _):
+        raise NotImplementedError("UnspacedList.remove() not yet implemented")
+    def reverse(self, _):
+        raise NotImplementedError("UnspacedList.reverse() not yet implemented")
+    def sort(self, _cmp=None, _key=None, _Rev=None):
+        raise NotImplementedError("UnspacedList.sort() not yet implemented")
     def __setslice__(self, i, j, newslice):
         raise NotImplementedError("Slice operations on UnspacedLists not yet implemented")