diff --git a/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs b/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs
index 794aa2fa55..c3270e6b69 100644
--- a/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs
+++ b/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs
@@ -250,6 +250,7 @@ namespace Content.Shared.Atmos.Monitor
         Gas
     }
 
+    [Serializable, NetSerializable]
     public enum AtmosMonitorVisuals : byte
     {
         Offset,
diff --git a/Content.Shared/Foldable/SharedFoldableSystem.cs b/Content.Shared/Foldable/SharedFoldableSystem.cs
index c4479bb40d..86045bd698 100644
--- a/Content.Shared/Foldable/SharedFoldableSystem.cs
+++ b/Content.Shared/Foldable/SharedFoldableSystem.cs
@@ -1,6 +1,7 @@
 using JetBrains.Annotations;
 using Robust.Shared.Containers;
 using Robust.Shared.GameStates;
+using Robust.Shared.Serialization;
 
 namespace Content.Shared.Foldable;
 
@@ -57,6 +58,7 @@ public abstract class SharedFoldableSystem : EntitySystem
             args.Cancel();
     }
 
+    [Serializable, NetSerializable]
     public enum FoldedVisuals : byte
     {
         State