diff --git a/src/SMESHGUI/SMESHGUI_MeshOp.cxx b/src/SMESHGUI/SMESHGUI_MeshOp.cxx
index 1ec62d78e..89a7a0b6a 100644
--- a/src/SMESHGUI/SMESHGUI_MeshOp.cxx
+++ b/src/SMESHGUI/SMESHGUI_MeshOp.cxx
@@ -1503,7 +1503,7 @@ void SMESHGUI_MeshOp::onAlgoSelected( const int theIndex,
     if ( isAccessibleDim( aDim - 1 ) ) {
       if ( algoData && myIsOnGeometry ) {
         for (int i = aDim - 1; i >= SMESH::DIM_0D; i--) {
-          if ( isAccessibleDim( i ) ) {
+          if ( isAccessibleDim( i ) && currentHyp( i, Algo ) < 0 ) {
             myDlg->disableTab( i );
             setCurrentHyp(i, Algo, -1);
           }