diff --git a/Content.Shared/_CP14/LockKey/SharedCP14LockKeySystem.cs b/Content.Shared/_CP14/LockKey/SharedCP14LockKeySystem.cs
index ec48c10a1a..46f042a24c 100644
--- a/Content.Shared/_CP14/LockKey/SharedCP14LockKeySystem.cs
+++ b/Content.Shared/_CP14/LockKey/SharedCP14LockKeySystem.cs
@@ -5,6 +5,7 @@ using Content.Shared.Lock;
 using Content.Shared.Popups;
 using Content.Shared.Storage;
 using Content.Shared.Verbs;
+using Content.Shared.Doors.Components;
 using Robust.Shared.Audio.Systems;
 using Robust.Shared.Random;
 using Robust.Shared.Serialization;
@@ -22,6 +23,7 @@ public sealed class SharedCP14LockKeySystem : EntitySystem
     private EntityQuery<LockComponent> _lockQuery;
     private EntityQuery<CP14LockComponent> _cp14LockQuery;
     private EntityQuery<CP14KeyComponent> _keyQuery;
+    private EntityQuery<DoorComponent> _doorQuery;
 
     public const int DepthComplexity = 2;
 
@@ -32,6 +34,7 @@ public sealed class SharedCP14LockKeySystem : EntitySystem
         _lockQuery = GetEntityQuery<LockComponent>();
         _cp14LockQuery = GetEntityQuery<CP14LockComponent>();
         _keyQuery = GetEntityQuery<CP14KeyComponent>();
+        _doorQuery = GetEntityQuery<DoorComponent>();
 
         SubscribeLocalEvent<CP14KeyComponent, AfterInteractEvent>(OnKeyInteract);
         SubscribeLocalEvent<CP14KeyRingComponent, AfterInteractEvent>(OnKeyRingInteract);
@@ -82,6 +85,9 @@ public sealed class SharedCP14LockKeySystem : EntitySystem
         if (!args.CanReach || args.Target is not { Valid: true })
             return;
 
+        if (_doorQuery.TryComp(args.Target, out var doorComponent) && doorComponent.State == DoorState.Open)
+            return;
+
         if (!_lockQuery.TryComp(args.Target, out _))
             return;