diff --git a/Projects/Server/Network/Packets/IncomingMovementPackets.cs b/Projects/Server/Network/Packets/IncomingMovementPackets.cs
index 0d38bdf60..7266d58c5 100644
--- a/Projects/Server/Network/Packets/IncomingMovementPackets.cs
+++ b/Projects/Server/Network/Packets/IncomingMovementPackets.cs
@@ -20,8 +20,9 @@ namespace Server.Network
         public static void Configure()
         {
             IncomingPackets.Register(0x02, 7, true, MovementReq);
-            IncomingPackets.Register(0xF0, 0, true, NewMovementReq);
-            IncomingPackets.Register(0xF1, 9, true, TimeSyncReq);
+            // Not used by OSI, and interferes with ClassicUO/Razor protocol extensions
+            // IncomingPackets.Register(0xF0, 0, true, NewMovementReq);
+            // IncomingPackets.Register(0xF1, 9, true, TimeSyncReq);
         }
 
         public static void NewMovementReq(NetState ns, CircularBufferReader reader)