diff --git a/IO/Geometry/vtkSTLReader.h b/IO/Geometry/vtkSTLReader.h
index 7d174bdc88ad4a5fda0964164adef080c2433345..280ba20a1808d6af489bb87f918c3c301f0b6569 100644
--- a/IO/Geometry/vtkSTLReader.h
+++ b/IO/Geometry/vtkSTLReader.h
@@ -51,7 +51,7 @@ public:
 
   ///@{
   /**
-   * Turn on/off merging of points/triangles.
+   * Turn on/off the merging of coincident points to restore neighborhood information.
    */
   vtkSetMacro(Merging, vtkTypeBool);
   vtkGetMacro(Merging, vtkTypeBool);