diff --git a/applications/utilities/postProcessing/graphics/PV3FoamReader/vtkPV3Foam/vtkPV3Foam.C b/applications/utilities/postProcessing/graphics/PV3FoamReader/vtkPV3Foam/vtkPV3Foam.C
index 692693d5a6..678ae8e958 100644
--- a/applications/utilities/postProcessing/graphics/PV3FoamReader/vtkPV3Foam/vtkPV3Foam.C
+++ b/applications/utilities/postProcessing/graphics/PV3FoamReader/vtkPV3Foam/vtkPV3Foam.C
@@ -84,7 +84,8 @@ void Foam::vtkPV3Foam::AddToBlock
         output->SetBlock(blockNo, block);
         block->Delete();
     }
-    else
+
+    if (block)
     {
         if (debug)
         {