diff --git a/Content.Server/MachineLinking/System/SignalLinkerSystem.cs b/Content.Server/MachineLinking/System/SignalLinkerSystem.cs
index 98bc32c951..860a3cde3e 100644
--- a/Content.Server/MachineLinking/System/SignalLinkerSystem.cs
+++ b/Content.Server/MachineLinking/System/SignalLinkerSystem.cs
@@ -164,15 +164,19 @@ namespace Content.Server.MachineLinking.System
             // validate links
             Dictionary<EntityUid, SignalTransmitterComponent?> uidCache = new();
             foreach (var rport in receiver.Inputs)
+            {
+                var toRemove = new List<PortIdentifier>();
                 foreach (var tport in rport.Value)
                 {
                     if (!uidCache.TryGetValue(tport.Uid, out var transmitter))
                         uidCache.Add(tport.Uid, transmitter = CompOrNull<SignalTransmitterComponent>(tport.Uid));
                     if (transmitter == null || !transmitter.Outputs.TryGetValue(tport.Port, out var tpv))
-                        rport.Value.Remove(tport);
+                        toRemove.Add(tport);
                     else if (!tpv.Contains(new(uid, rport.Key)))
                         tpv.Add(new(uid, rport.Key));
                 }
+                toRemove.ForEach(tport => rport.Value.Remove(tport));
+            }
         }
 
         private void OnTransmitterRemoved(EntityUid uid, SignalTransmitterComponent transmitter, ComponentRemove args)