diff --git a/idl/SMESH_Gen.idl b/idl/SMESH_Gen.idl
index 48fa45cff..f11fafdfb 100644
--- a/idl/SMESH_Gen.idl
+++ b/idl/SMESH_Gen.idl
@@ -71,7 +71,8 @@ module SMESH
   const long Tag_FaceGroups             = 13;
   const long Tag_VolumeGroups           = 14;
   const long Tag_0DElementsGroups       = 15;
-  const long Tag_LastGroup              = 15;
+  const long Tag_BallElementsGroups     = 16;
+  const long Tag_LastGroup              = 16;
 
   /*!
    * Hypothesis definintion error