diff --git a/aksetup_helper.py b/aksetup_helper.py
index 5dc14139ceaa3fe5cb188e53f75d9e4667f2b308..50507afca8e8af736d51ef154316b6badef69b42 100644
--- a/aksetup_helper.py
+++ b/aksetup_helper.py
@@ -285,7 +285,7 @@ class ConfigSchema:
             if value is not None:
                 filevars[key] = value
 
-        keys = filevars.keys()
+        keys = list(filevars.keys())
         keys.sort()
 
         outf = open(filename, "w")