diff --git a/idl/SMESH_Mesh.idl b/idl/SMESH_Mesh.idl
index 172c4517d..2a5d4740d 100644
--- a/idl/SMESH_Mesh.idl
+++ b/idl/SMESH_Mesh.idl
@@ -682,6 +682,8 @@ module SMESH
 
     void ConvertToQuadratic(in boolean theForce3d);
 
+    boolean ConvertFromQuadratic();
+
     void RenumberNodes();
 
     void RenumberElements();