diff --git a/Code/Mantid/scripts/SANS/centre_finder.py b/Code/Mantid/scripts/SANS/centre_finder.py
index 09939729b3424177f36cce7c9c38d77ab6c34df1..ec098fbf36f57810c49124766bf36fb1f2332760 100644
--- a/Code/Mantid/scripts/SANS/centre_finder.py
+++ b/Code/Mantid/scripts/SANS/centre_finder.py
@@ -3,7 +3,7 @@ import reduction.instruments.sans.sans_reduction_steps as sans_reduction_steps
 from mantidsimple import *
 import SANSUtility
 
-class CentreFinder():
+class CentreFinder(object):
     """
         Aids estimating the effective centre of the particle beam by calculating Q in four
         quadrants and using the asymmetry to calculate the direction to the beam centre. A