diff --git a/AMNet.Server/CardPresenter.cs b/AMNet.Server/CardPresenter.cs
index e4f248c..b2d18fe 100644
--- a/AMNet.Server/CardPresenter.cs
+++ b/AMNet.Server/CardPresenter.cs
@@ -36,7 +36,7 @@ internal class CardPresenter
         lock (_cardLock)
         {
             // IDm and requireIDm are mutually exclusive
-            if (_currentCard == null || (requireIDm.HasValue && (_currentCard.IDm == null) ^ requireIDm.Value))
+            if (_currentCard == null || (requireIDm.HasValue && (_currentCard.IDm != null) ^ requireIDm.Value))
             {
                 return null;
             }