diff --git a/src/SMESH/SMESH_Mesh.cxx b/src/SMESH/SMESH_Mesh.cxx
index a85e23e23..7a0b5130e 100644
--- a/src/SMESH/SMESH_Mesh.cxx
+++ b/src/SMESH/SMESH_Mesh.cxx
@@ -105,6 +105,23 @@ SMESH_Mesh::SMESH_Mesh(int               theLocalId,
   _myMeshDS->ShapeToMesh( PseudoShape() );
 }
 
+//================================================================================
+/*!
+ * \brief Constructor of SMESH_Mesh being a base of some descendant class
+ */
+//================================================================================
+
+SMESH_Mesh::SMESH_Mesh():
+  _groupId( 0 ), _nbSubShapes( 0 )
+{
+  _myMeshDS      = 0;
+  _isShapeToMesh = false;
+  _isAutoColor   = false;
+  _isModified    = false;
+  _shapeDiagonal = 0.0;
+  _rmGroupCallUp = 0;
+}
+
 //=============================================================================
 /*!
  * 
diff --git a/src/SMESH/SMESH_Mesh.hxx b/src/SMESH/SMESH_Mesh.hxx
index c88bbd02d..df5b281fb 100644
--- a/src/SMESH/SMESH_Mesh.hxx
+++ b/src/SMESH/SMESH_Mesh.hxx
@@ -332,7 +332,7 @@ protected:
   TRmGroupCallUp*            _rmGroupCallUp;
 
 protected:
-  SMESH_Mesh() {};
+  SMESH_Mesh();
   SMESH_Mesh(const SMESH_Mesh&) {};
 };