diff --git a/Projekte/mdga/client/src/main/java/pp/mdga/client/server/MdgaServer.java b/Projekte/mdga/client/src/main/java/pp/mdga/client/server/MdgaServer.java
index 9c6351c7..04b8c9c0 100644
--- a/Projekte/mdga/client/src/main/java/pp/mdga/client/server/MdgaServer.java
+++ b/Projekte/mdga/client/src/main/java/pp/mdga/client/server/MdgaServer.java
@@ -108,6 +108,7 @@ private void initializeSerializables() {
         Serializer.registerClass(RequestPlayCardMessage.class);
         Serializer.registerClass(SelectCardMessage.class);
         Serializer.registerClass(SelectedPiecesMessage.class);
+        Serializer.registerClass(SelectPieceMessage.class);
         Serializer.registerClass(SelectTSKMessage.class);
         Serializer.registerClass(ActivePlayerMessage.class);
         Serializer.registerClass(AnyPieceMessage.class);