diff --git a/pglablib/catalog/PgContainer.h b/pglablib/catalog/PgContainer.h
index 82f8bb2..fb148a7 100644
--- a/pglablib/catalog/PgContainer.h
+++ b/pglablib/catalog/PgContainer.h
@@ -124,7 +124,7 @@ public:
 	using t_Container = std::vector<t_Elem>; ///< Do not assume it will stay a vector only expect bidirectional access
 
 	explicit PgSPtrContainer(std::weak_ptr<PgDatabaseCatalog> cat)
-		: m_catalog(cat)
+		: IPgContainer(cat)
 	{}
 
 
@@ -188,7 +188,6 @@ public:
 		std::sort(m_container.begin(), m_container.end());
 	}
 protected:
-	std::weak_ptr<PgDatabaseCatalog> m_catalog;
 	t_Container m_container;
 
 	/** Override the implementation for this function to implement loading of single row.