diff --git a/bob/bio/base/algorithm/Distance.py b/bob/bio/base/algorithm/Distance.py
index 341ede9b66488ffd232fb39a71accf743083f3d3..a3d91aa37ef0b80f94d88f7753bcfba544555456 100644
--- a/bob/bio/base/algorithm/Distance.py
+++ b/bob/bio/base/algorithm/Distance.py
@@ -124,7 +124,7 @@ class Distance (Algorithm):
   def train_projector(*args,**kwargs): raise NotImplementedError()
   def load_projector(*args,**kwargs): pass
   def project(*args,**kwargs): raise NotImplementedError()
-  def read_feature(*args,**kwargs): raise NotImplementedError()
   def write_feature(*args,**kwargs): raise NotImplementedError()
+  def read_feature(*args,**kwargs): raise NotImplementedError()
   def train_enroller(*args,**kwargs): raise NotImplementedError()
   def load_enroller(*args,**kwargs): pass