diff --git a/Code/Mantid/scripts/Reflectometry/isis_reflectometry/convert_to_wavelength.py b/Code/Mantid/scripts/Reflectometry/isis_reflectometry/convert_to_wavelength.py
index eb49e3a7d153..29abe92dfcb2 100644
--- a/Code/Mantid/scripts/Reflectometry/isis_reflectometry/convert_to_wavelength.py
+++ b/Code/Mantid/scripts/Reflectometry/isis_reflectometry/convert_to_wavelength.py
@@ -45,7 +45,9 @@ def to_workspace(cls, candidate):
             if  mantid.api.AnalysisDataService.doesExist(candidate.strip()):
                 _workspace = mantid.api.AnalysisDataService.retrieve(candidate.strip())
             else:
-                 _workspace = msi.Load(Filename=candidate)
+                ws_name = "_" + str(candidate.strip())
+                msi.Load(Filename=candidate, OutputWorkspace=ws_name)
+                _workspace = mantid.api.AnalysisDataService.retrieve(ws_name)
         else:
              raise ValueError("Unknown source item %s" % candidate)
         return _workspace
@@ -55,7 +57,6 @@ def __to_workspace_list(self, source_list):
         for item in source_list:
             temp.append(ConvertToWavelength.to_workspace(item))
         self.__ws_list = temp
-        
     
     def __init__(self, source):
         """