diff --git a/code/ryzom/server/src/entities_game_service/player_manager/db_string_updater.h b/code/ryzom/server/src/entities_game_service/player_manager/db_string_updater.h
index 059e7d765..ec8e8041f 100644
--- a/code/ryzom/server/src/entities_game_service/player_manager/db_string_updater.h
+++ b/code/ryzom/server/src/entities_game_service/player_manager/db_string_updater.h
@@ -53,6 +53,8 @@ class CDBStringUpdater : public NLMISC::CSingleton<CDBStringUpdater>
 	// hasher for the identifier
 	struct THashDBStringLeaf
 	{
+		static const size_t bucket_size = 4;
+		static const size_t min_buckets = 8;
 		size_t operator()(const TBDStringLeaf &stringLeaf) const
 		{
 			return ((size_t)stringLeaf.ClientDB>>4) ^ ((size_t)stringLeaf.Node>>4);
diff --git a/code/ryzom/server/src/entities_game_service/player_manager/player_manager.h b/code/ryzom/server/src/entities_game_service/player_manager/player_manager.h
index 9f1643e84..9f159fd01 100644
--- a/code/ryzom/server/src/entities_game_service/player_manager/player_manager.h
+++ b/code/ryzom/server/src/entities_game_service/player_manager/player_manager.h
@@ -48,9 +48,10 @@ namespace NLNET
 
 extern CGenericXmlMsgHeaderManager	GenericMsgManager;
 
-class CServiceIdHash
+struct CServiceIdHash
 {
-public:
+	static const size_t bucket_size = 4;
+	static const size_t min_buckets = 8;
 	size_t	operator () ( const NLNET::TServiceId &sid ) const { return sid.get(); }
 };
 
diff --git a/code/ryzom/server/src/entities_game_service/player_manager/player_manager_interface.h b/code/ryzom/server/src/entities_game_service/player_manager/player_manager_interface.h
index a18e1645a..a76e9656a 100644
--- a/code/ryzom/server/src/entities_game_service/player_manager/player_manager_interface.h
+++ b/code/ryzom/server/src/entities_game_service/player_manager/player_manager_interface.h
@@ -41,9 +41,10 @@ public:
 
 	};
 
-	class CUint32Hash
+	struct CUint32Hash
 	{
-	public:
+		static const size_t bucket_size = 4;
+		static const size_t min_buckets = 8;
 		size_t	operator () ( const uint32 &i ) const { return i; }
 	};
 
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 0f18698c5..f6b79e42d 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
@@ -89,9 +89,10 @@ public:
 
 private:
 
-	class CHash
+	struct CHash
 	{
-	public:
+		static const size_t bucket_size = 4;
+		static const size_t min_buckets = 8;
 		size_t	operator () ( const TEntityIndex& index ) const { return index.getIndex(); }
 	};
 
diff --git a/code/ryzom/server/src/frontend_service/vision_provider.h b/code/ryzom/server/src/frontend_service/vision_provider.h
index 39d84fb2f..aaca90869 100644
--- a/code/ryzom/server/src/frontend_service/vision_provider.h
+++ b/code/ryzom/server/src/frontend_service/vision_provider.h
@@ -84,6 +84,8 @@ class CClientIdLookup;
 	// Hash function: ClientId * 256 + CeId
 	struct CHash
 	{
+		static const size_t bucket_size = 4;
+		static const size_t min_buckets = 8;
 		size_t		operator() ( TPairClientSlot pair ) const { return (pair.ClientId << 8) + pair.Slot; }
 	};
 
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 75ea9ead5..f3a285a2e 100644
--- a/code/ryzom/server/src/gpm_service/world_position_manager.h
+++ b/code/ryzom/server/src/gpm_service/world_position_manager.h
@@ -137,9 +137,10 @@ public:
 	//friend void				CWorldEntity::createPrimitive(NLPACS::UMoveContainer *pMoveContainer, uint8 worldImage);
 	friend void				CWorldEntity::removePrimitive();
 
-	class CEntityIdHash
+	struct CEntityIdHash
 	{
-	public:
+		static const size_t bucket_size = 4;
+		static const size_t min_buckets = 8;
 		size_t	operator () ( const NLMISC::CEntityId &id ) const { return (uint32)id.getShortId(); }
 	};
 
diff --git a/code/ryzom/server/src/pd_lib/pd_utils.h b/code/ryzom/server/src/pd_lib/pd_utils.h
index 0f0ab46d5..e6dbb15fc 100644
--- a/code/ryzom/server/src/pd_lib/pd_utils.h
+++ b/code/ryzom/server/src/pd_lib/pd_utils.h
@@ -499,7 +499,7 @@ struct CColumnIndexHashMapTraits
 	}
 	bool operator()(const CColumnIndex &left, const CColumnIndex &right)
 	{
-		return left.hash() < right.hash();
+		return left < right;
 	}
 };