diff --git a/src/BRepCheck/BRepCheck_Analyzer.cxx b/src/BRepCheck/BRepCheck_Analyzer.cxx
index f478ef833f..1e777665ce 100644
--- a/src/BRepCheck/BRepCheck_Analyzer.cxx
+++ b/src/BRepCheck/BRepCheck_Analyzer.cxx
@@ -334,7 +334,9 @@ public:
   }
 
 private:
+  BRepCheck_ParallelAnalyzer& operator=(const BRepCheck_ParallelAnalyzer&) Standard_DELETE;
 
+private:
   NCollection_Array1< NCollection_Array1<TopoDS_Shape> >& myArray;
   const BRepCheck_IndexedDataMapOfShapeResult& myMap;
 };