diff --git a/trustify/client/sni_challenge.py b/trustify/client/sni_challenge.py
index a072cdafa..774fedf82 100644
--- a/trustify/client/sni_challenge.py
+++ b/trustify/client/sni_challenge.py
@@ -256,8 +256,8 @@ DocumentRoot " + CONFIG_DIR + "challenge_page/ \n \
             # The public ip address isn't actually accessed
             ###################################################
 
-            addresses = [default_addr]
-            
+            addresses = []
+            addresses.append([default_addr])
             #################################################
             # End quick fix
             ##############################################