diff --git a/Framework/PythonInterface/plugins/algorithms/CalibrateRectangularDetectors.py b/Framework/PythonInterface/plugins/algorithms/CalibrateRectangularDetectors.py
index a0398453361f1bc970c4da016e07cf457d13b97a..a4ecdeb5d110b0599441a9c7a05ac39aec31a1a7 100644
--- a/Framework/PythonInterface/plugins/algorithms/CalibrateRectangularDetectors.py
+++ b/Framework/PythonInterface/plugins/algorithms/CalibrateRectangularDetectors.py
@@ -375,14 +375,14 @@ class CalibrateRectangularDetectors(PythonAlgorithm):
         if wksp is None:
             return None
         MaskDetectors(Workspace=wksp, MaskedWorkspace=str(wksp)+"mask")
-        wksp = AlignDetectors(InputWorkspace=wksp, OutputWorkspace=wksp.name(),
+        wksp = AlignDetectors(InputWorkspace=wksp, OutputWorkspace=wksp,
                               CalibrationWorkspace=str(wksp)+"cal")
         # Diffraction focusing using new calibration file with offsets
         if self._diffractionfocus:
-            wksp = DiffractionFocussing(InputWorkspace=wksp, OutputWorkspace=wksp.name(),
+            wksp = DiffractionFocussing(InputWorkspace=wksp, OutputWorkspace=wksp,
                                         GroupingWorkspace=str(wksp)+"group")
 
-        wksp = Rebin(InputWorkspace=wksp, OutputWorkspace=wksp.name(), Params=self._binning)
+        wksp = Rebin(InputWorkspace=wksp, OutputWorkspace=wksp, Params=self._binning)
         return wksp
 
     def _initCCpars(self):