diff --git a/Code/Mantid/Framework/DataHandling/src/SaveVTK.cpp b/Code/Mantid/Framework/DataHandling/src/SaveVTK.cpp
index ff4b8f91f451e1aa6455d7c7320481be82abe628..f385c2600664872db576d5e805ccd46b37bf44e1 100644
--- a/Code/Mantid/Framework/DataHandling/src/SaveVTK.cpp
+++ b/Code/Mantid/Framework/DataHandling/src/SaveVTK.cpp
@@ -46,7 +46,7 @@ namespace Mantid
         "0)" );
       declareProperty("Xmaximum", 0.0, mustBePositive,
         "No bin that contains x values higher than this will saved (default\n"
-        "the highest x value)" );
+        "0 signifies the highest x value)" );
     }
 
     /**