diff --git a/osu.Game/Online/Multiplayer/InvalidPasswordException.cs b/osu.Game/Online/Multiplayer/InvalidPasswordException.cs
index d3da8f491b..b76a1cc05d 100644
--- a/osu.Game/Online/Multiplayer/InvalidPasswordException.cs
+++ b/osu.Game/Online/Multiplayer/InvalidPasswordException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -10,13 +9,5 @@ namespace osu.Game.Online.Multiplayer
     [Serializable]
     public class InvalidPasswordException : HubException
     {
-        public InvalidPasswordException()
-        {
-        }
-
-        protected InvalidPasswordException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/osu.Game/Online/Multiplayer/InvalidStateChangeException.cs b/osu.Game/Online/Multiplayer/InvalidStateChangeException.cs
index 4c793dba68..2bae31196a 100644
--- a/osu.Game/Online/Multiplayer/InvalidStateChangeException.cs
+++ b/osu.Game/Online/Multiplayer/InvalidStateChangeException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -14,10 +13,5 @@ namespace osu.Game.Online.Multiplayer
             : base($"Cannot change from {oldState} to {newState}")
         {
         }
-
-        protected InvalidStateChangeException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/osu.Game/Online/Multiplayer/InvalidStateException.cs b/osu.Game/Online/Multiplayer/InvalidStateException.cs
index 27b111a781..c9705e9e53 100644
--- a/osu.Game/Online/Multiplayer/InvalidStateException.cs
+++ b/osu.Game/Online/Multiplayer/InvalidStateException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -14,10 +13,5 @@ namespace osu.Game.Online.Multiplayer
             : base(message)
         {
         }
-
-        protected InvalidStateException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/osu.Game/Online/Multiplayer/NotHostException.cs b/osu.Game/Online/Multiplayer/NotHostException.cs
index cd43b13e52..f4fd217c87 100644
--- a/osu.Game/Online/Multiplayer/NotHostException.cs
+++ b/osu.Game/Online/Multiplayer/NotHostException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -14,10 +13,5 @@ namespace osu.Game.Online.Multiplayer
             : base("User is attempting to perform a host level operation while not the host")
         {
         }
-
-        protected NotHostException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/osu.Game/Online/Multiplayer/NotJoinedRoomException.cs b/osu.Game/Online/Multiplayer/NotJoinedRoomException.cs
index 0a96406c16..72773e28db 100644
--- a/osu.Game/Online/Multiplayer/NotJoinedRoomException.cs
+++ b/osu.Game/Online/Multiplayer/NotJoinedRoomException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -14,10 +13,5 @@ namespace osu.Game.Online.Multiplayer
             : base("This user has not yet joined a multiplayer room.")
         {
         }
-
-        protected NotJoinedRoomException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/osu.Game/Online/Multiplayer/UserBlockedException.cs b/osu.Game/Online/Multiplayer/UserBlockedException.cs
index e964b13c75..58e86d9f32 100644
--- a/osu.Game/Online/Multiplayer/UserBlockedException.cs
+++ b/osu.Game/Online/Multiplayer/UserBlockedException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -16,10 +15,5 @@ namespace osu.Game.Online.Multiplayer
             : base(MESSAGE)
         {
         }
-
-        protected UserBlockedException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/osu.Game/Online/Multiplayer/UserBlocksPMsException.cs b/osu.Game/Online/Multiplayer/UserBlocksPMsException.cs
index 14ed6fc212..0ea583ae2c 100644
--- a/osu.Game/Online/Multiplayer/UserBlocksPMsException.cs
+++ b/osu.Game/Online/Multiplayer/UserBlocksPMsException.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Runtime.Serialization;
 using Microsoft.AspNetCore.SignalR;
 
 namespace osu.Game.Online.Multiplayer
@@ -16,10 +15,5 @@ namespace osu.Game.Online.Multiplayer
             : base(MESSAGE)
         {
         }
-
-        protected UserBlocksPMsException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }