diff --git a/sahara/utils/patches.py b/sahara/utils/patches.py
index c1b1d11..756a46b 100644
--- a/sahara/utils/patches.py
+++ b/sahara/utils/patches.py
@@ -79,7 +79,7 @@ def patch_minidom_writexml():
         writer.write(indent + "<" + self.tagName)
 
         attrs = self._get_attributes()
-        a_names = attrs.keys()
+        a_names = list(attrs.keys())
         a_names.sort()
 
         for a_name in a_names: