diff --git a/src/Controls/SMESH_Controls.cxx b/src/Controls/SMESH_Controls.cxx
index 1ad00533a..dcb5d7b1a 100644
--- a/src/Controls/SMESH_Controls.cxx
+++ b/src/Controls/SMESH_Controls.cxx
@@ -1954,6 +1954,7 @@ bool MultiConnection2D::Value::operator<(const MultiConnection2D::Value& x) cons
 }
 
 void MultiConnection2D::GetValues(MValues& theValues){
+  if ( !myMesh ) return;
   SMDS_FaceIteratorPtr anIter = myMesh->facesIterator();
   for(; anIter->more(); ){
     const SMDS_MeshFace* anElem = anIter->next();
diff --git a/src/SMESHGUI/SMESHGUI_MeshOp.cxx b/src/SMESHGUI/SMESHGUI_MeshOp.cxx
index 1fc82405f..8c1813f56 100644
--- a/src/SMESHGUI/SMESHGUI_MeshOp.cxx
+++ b/src/SMESHGUI/SMESHGUI_MeshOp.cxx
@@ -1555,7 +1555,7 @@ void SMESHGUI_MeshOp::onAlgoSelected( const int theIndex,
         hypIndex = this->find( curHyp, myExistingHyps[ dim ][ type ]);
       else
         hypIndex = -1;
-      if ( !isSubmesh && hypIndex < 0 && anExisting.count() == 1 ) {
+      if ( !isSubmesh && myToCreate && hypIndex < 0 && anExisting.count() == 1 ) {
         // none is yet selected => select the sole existing if it is not optional
         CORBA::String_var hypTypeName = myExistingHyps[ dim ][ type ].first().first->GetName();
         bool isOptional = true;
diff --git a/src/SMESHGUI/SMESHGUI_Utils.h b/src/SMESHGUI/SMESHGUI_Utils.h
index d5ec25ed4..5ac9ee97c 100644
--- a/src/SMESHGUI/SMESHGUI_Utils.h
+++ b/src/SMESHGUI/SMESHGUI_Utils.h
@@ -204,7 +204,7 @@ SMESHGUI_EXPORT
   struct toQStr : public toStrT< QString > {
     toQStr( char* s ): toStrT< QString >(s) {}
   };
-  class toStdStr : public toStrT< std::string > {
+  struct toStdStr : public toStrT< std::string > {
     toStdStr( char* s ): toStrT< std::string >(s) {}
   };