diff --git a/Content.Client/PDA/Ringer/RingerSystem.cs b/Content.Client/PDA/Ringer/RingerSystem.cs
index 6d45a8ce8b..6e2bb043ca 100644
--- a/Content.Client/PDA/Ringer/RingerSystem.cs
+++ b/Content.Client/PDA/Ringer/RingerSystem.cs
@@ -33,24 +33,4 @@ public sealed class RingerSystem : SharedRingerSystem
             bui.Update();
         }
     }
-
-    /// <inheritdoc/>
-    public override bool TryToggleUplink(EntityUid uid, Note[] ringtone, EntityUid? user = null)
-    {
-        if (!TryComp<RingerUplinkComponent>(uid, out var uplink))
-            return false;
-
-        if (!HasComp<StoreComponent>(uid))
-            return false;
-
-        // Special case for client-side prediction:
-        // Since we can't expose the uplink code to clients for security reasons,
-        // we assume if an antagonist is trying to set a ringtone, it's to unlock the uplink.
-        // The server will properly verify the code and correct if needed.
-        if (IsAntagonist(user))
-            return ToggleUplinkInternal((uid, uplink));
-
-        // Non-antagonists never get to toggle the uplink on the client
-        return false;
-    }
 }
diff --git a/Content.Shared/PDA/SharedRingerSystem.cs b/Content.Shared/PDA/SharedRingerSystem.cs
index 278ab94307..0fa5a570aa 100644
--- a/Content.Shared/PDA/SharedRingerSystem.cs
+++ b/Content.Shared/PDA/SharedRingerSystem.cs
@@ -145,16 +145,18 @@ public abstract class SharedRingerSystem : EntitySystem
 
     /// <summary>
     /// Attempts to unlock or lock the uplink by checking the provided ringtone against the uplink code.
-    /// On the client side, for antagonists, the code check is skipped to support prediction.
-    /// On the server side, the code is always verified.
+    /// On the client side, it does nothing since the client cannot know the code in advance.
+    /// On the server side, the code is verified.
     /// </summary>
     /// <param name="uid">The entity with the RingerUplinkComponent.</param>
     /// <param name="ringtone">The ringtone to check against the uplink code.</param>
-    /// <param name="user">The entity attempting to toggle the uplink. If the user is an antagonist,
-    /// the ringtone code check will be skipped on the client to allow prediction.</param>
+    /// <param name="user">The entity attempting to toggle the uplink.</param>
     /// <returns>True if the uplink state was toggled, false otherwise.</returns>
     [PublicAPI]
-    public abstract bool TryToggleUplink(EntityUid uid, Note[] ringtone, EntityUid? user = null);
+    public virtual bool TryToggleUplink(EntityUid uid, Note[] ringtone, EntityUid? user = null)
+    {
+        return false;
+    }
 
     #endregion