diff --git a/nifty2go/spaces/hp_space/hp_space.py b/nifty2go/spaces/hp_space/hp_space.py
index fc7ee1390fcdd1b601007e51e2dd52568921e9b8..54aef1b8b056745f98a0fa6575154a3e965168ec 100644
--- a/nifty2go/spaces/hp_space/hp_space.py
+++ b/nifty2go/spaces/hp_space/hp_space.py
@@ -136,7 +136,7 @@ class HPSpace(Space):
 
     def get_default_codomain(self):
         from .. import LMSpace
-        return LMSpace(lmax=2*domain.nside)
+        return LMSpace(lmax=2*self.nside)
 
     def check_codomain(self, codomain):
         from .. import LMSpace