diff --git a/Packages/vcs/Lib/vcs2vtk.py b/Packages/vcs/Lib/vcs2vtk.py
index f4ba888387..13e5dde859 100644
--- a/Packages/vcs/Lib/vcs2vtk.py
+++ b/Packages/vcs/Lib/vcs2vtk.py
@@ -53,18 +53,19 @@ def putMaskOnVTKGrid(data,grid,actorColor=None,cellData=True,deep=True):
                   grid2.SetPointVisibilityArray(nomsk)
               grid2.GetPointData().SetScalars(imsk)
               #grid2.SetCellVisibilityArray(imsk)
-              p2c = vtk.vtkPointDataToCellData()
-              p2c.SetInputData(grid2)
-              geoFilter.SetInputConnection(p2c.GetOutputPort())
-              #lut.SetTableValue(0,r/100.,g/100.,b/100.,1.)
-              #lut.SetTableValue(1,r/100.,g/100.,b/100.,0.)
+              #p2c = vtk.vtkPointDataToCellData()
+              #p2c.SetInputData(grid2)
+              #geoFilter.SetInputConnection(p2c.GetOutputPort())
+              geoFilter.SetInputData(grid2)
+              lut.SetTableValue(0,r/100.,g/100.,b/100.,1.)
+              lut.SetTableValue(1,r/100.,g/100.,b/100.,1.)
           else:
               if grid2.IsA("vtkStructuredGrid"):
                   grid2.SetCellVisibilityArray(nomsk)
               grid2.GetCellData().SetScalars(imsk)
               geoFilter.SetInputData(grid2)
-          lut.SetTableValue(0,r/100.,g/100.,b/100.,0.)
-          lut.SetTableValue(1,r/100.,g/100.,b/100.,1.)
+              lut.SetTableValue(0,r/100.,g/100.,b/100.,0.)
+              lut.SetTableValue(1,r/100.,g/100.,b/100.,1.)
           geoFilter.Update()
           mapper = vtk.vtkPolyDataMapper()
           mapper.SetInputData(geoFilter.GetOutput())
diff --git a/testing/vcs/CMakeLists.txt b/testing/vcs/CMakeLists.txt
index bea9ede269..0f4204e4f0 100644
--- a/testing/vcs/CMakeLists.txt
+++ b/testing/vcs/CMakeLists.txt
@@ -253,6 +253,11 @@ cdat_add_test(vcs_test_taylor_2_quads
 
   # These test actually plot things need sample data
   if (CDAT_DOWNLOAD_SAMPLE_DATA)
+    cdat_add_test(test_vcs_isofill_mask_cell_shift
+      "${PYTHON_EXECUTABLE}"
+      ${cdat_SOURCE_DIR}/testing/vcs/test_vcs_isofill_mask_cell_shift.py
+      ${BASELINE_DIR}/test_vcs_isofill_mask_cell_shift.png
+      )
     cdat_add_test(vcs_test_bad_time_units
       "${PYTHON_EXECUTABLE}"
       ${cdat_SOURCE_DIR}/testing/vcs/test_vcs_bad_time_units.py
diff --git a/testing/vcs/test_vcs_isofill_mask_cell_shift.py b/testing/vcs/test_vcs_isofill_mask_cell_shift.py
new file mode 100644
index 0000000000..0316b71ac3
--- /dev/null
+++ b/testing/vcs/test_vcs_isofill_mask_cell_shift.py
@@ -0,0 +1,24 @@
+import os,sys
+import MV2
+import vcs
+import cdms2
+src=sys.argv[1]
+pth = os.path.join(os.path.dirname(__file__),"..")
+sys.path.append(pth)
+import checkimage
+x=vcs.init()
+x.drawlogooff()
+
+x.setbgoutputdimensions(1200,1091,units="pixels")
+
+f=cdms2.open(os.path.join(sys.prefix,"sample_data","clt.nc"))
+s=f("clt",slice(0,1),latitude=(30,70),longitude=(-130,-60))
+s2=MV2.masked_greater(s,65.)
+
+x.plot(s2,"default","isofill",bg=1)
+fnm = "test_vcs_isofill_mask_cell_shift.png"
+x.png(fnm)
+print "fnm:",fnm
+print "src:",src
+ret = checkimage.check_result_image(fnm,src,checkimage.defaultThreshold)
+sys.exit(ret)