diff --git a/sgm/modules/diffusionmodules/discretizer.py b/sgm/modules/diffusionmodules/discretizer.py
index 0e4e1a7..397b8f3 100644
--- a/sgm/modules/diffusionmodules/discretizer.py
+++ b/sgm/modules/diffusionmodules/discretizer.py
@@ -21,7 +21,7 @@ class Discretization:
 
     @abstractmethod
     def get_sigmas(self, n, device):
-        raise NotImplementedError("abstract class should not be called")
+        pass
 
 
 class EDMDiscretization(Discretization):