diff --git a/src/knx/group_object/group_object.h b/src/knx/group_object/group_object.h
index 93918b4..4caa44c 100644
--- a/src/knx/group_object/group_object.h
+++ b/src/knx/group_object/group_object.h
@@ -303,7 +303,7 @@ namespace Knx
     class GroupObject
     {
             friend class GroupObjectTableObject;
-
+            GroupObject(const GroupObject& other) = delete;
         public:
             /**
              * The constructor.