diff --git a/code/ryzom/server/src/frontend_service/client_entity_id_translator.h b/code/ryzom/server/src/frontend_service/client_entity_id_translator.h
index 957774f39..f80fbe983 100644
--- a/code/ryzom/server/src/frontend_service/client_entity_id_translator.h
+++ b/code/ryzom/server/src/frontend_service/client_entity_id_translator.h
@@ -92,7 +92,8 @@ private:
 	struct CHash
 	{
 		enum { bucket_size = 4, min_buckets = 8, };
-		size_t	operator () ( const TEntityIndex& index ) const { return index.getIndex(); }
+		size_t	operator () (const TEntityIndex& index) const { return index.getIndex(); }
+		bool operator() (const TEntityIndex& left, const TEntityIndex& right) { return left < right; }
 	};
 
 	// table to map CEntityId to TCLEntityId
diff --git a/code/ryzom/server/src/frontend_service/client_id_lookup.h b/code/ryzom/server/src/frontend_service/client_id_lookup.h
index 9db039a12..9c63a60a6 100644
--- a/code/ryzom/server/src/frontend_service/client_id_lookup.h
+++ b/code/ryzom/server/src/frontend_service/client_id_lookup.h
@@ -117,7 +117,8 @@ private:
 	struct CIdHash
 	{
 		enum { bucket_size = 4, min_buckets = 8, };
-		size_t	operator () ( NLMISC::CEntityId id ) const { return (uint32)id.getShortId(); }
+		size_t	operator () (NLMISC::CEntityId id) const { return (uint32)id.getShortId(); }
+		bool operator() (const NLMISC::CEntityId& left, const NLMISC::CEntityId& right) { return left < right; }
 	};
 
 	typedef CHashMap<NLMISC::CEntityId, TClientId, CIdHash>	TIdToClientMap;
diff --git a/code/ryzom/server/src/frontend_service/fe_types.h b/code/ryzom/server/src/frontend_service/fe_types.h
index 08a12eb5a..d63ef1e42 100644
--- a/code/ryzom/server/src/frontend_service/fe_types.h
+++ b/code/ryzom/server/src/frontend_service/fe_types.h
@@ -77,6 +77,7 @@ struct CInetAddressHashMapTraits
 		//return x.port();
 		return x.internalIPAddress();
 	}
+	bool operator() (const NLNET::CInetAddress& left, const NLNET::CInetAddress& right) { return left < right; }
 // 	bool operator() (const NLNET::CInetAddress &x1, const NLNET::CInetAddress &x2) const
 // 	{
 // 		return classId1 < classId2;
diff --git a/code/ryzom/server/src/frontend_service/frontend_service.cpp b/code/ryzom/server/src/frontend_service/frontend_service.cpp
index cbf4a5610..c973ebcfd 100644
--- a/code/ryzom/server/src/frontend_service/frontend_service.cpp
+++ b/code/ryzom/server/src/frontend_service/frontend_service.cpp
@@ -1862,7 +1862,7 @@ NLMISC_COMMAND( dumpImpulseStats, "Dump Impulse stat to XML log", "<logfile> [[-
 		if (reverse)
 			comp = -comp;
 
-		result.push_back(std::make_pair<float, CClientHost*>(comp, client));
+		result.push_back(std::pair<float, CClientHost*>(comp, client));
 	}
 
 	if (ucriterion != 0 && !result.empty())
diff --git a/code/ryzom/server/src/gpm_service/world_position_manager.h b/code/ryzom/server/src/gpm_service/world_position_manager.h
index 18645d8ca..81209357c 100644
--- a/code/ryzom/server/src/gpm_service/world_position_manager.h
+++ b/code/ryzom/server/src/gpm_service/world_position_manager.h
@@ -140,7 +140,8 @@ public:
 	struct CEntityIdHash
 	{
 		enum { bucket_size = 4, min_buckets = 8, };
-		size_t	operator () ( const NLMISC::CEntityId &id ) const { return (uint32)id.getShortId(); }
+		size_t	operator () (const NLMISC::CEntityId &id) const { return (uint32)id.getShortId(); }
+		size_t	operator () (const NLMISC::CEntityId &left, const NLMISC::CEntityId &right) const { return left < right; }
 	};
 
 	/// Container of entities (all entities are referenced by this container