diff --git a/QuantumFramework/Kernel/QuantumOperator/NamedOperators.m b/QuantumFramework/Kernel/QuantumOperator/NamedOperators.m
index 57a74c12..d352ecd7 100644
--- a/QuantumFramework/Kernel/QuantumOperator/NamedOperators.m
+++ b/QuantumFramework/Kernel/QuantumOperator/NamedOperators.m
@@ -705,11 +705,13 @@
 ]]
 
 
-QuantumOperator["Discard" | {"Discard", args___}, order : _ ? orderQ : {1}] := QuantumOperator[{"Spider", QuantumBasis[args]},
+QuantumOperator[{"Discard", args___}, order : _ ? orderQ : {1}] := QuantumOperator[{"Spider", QuantumBasis[args]},
     order -> {},
     "Label" -> "Discard"
 ]
 
+QuantumOperator["Discard", args___] := QuantumOperator[{"Discard", 4}, args]
+
 
 QuantumOperator["HeisenbergWeyl", opts___] := QuantumOperartor[{"HeisenbergWeyl", 2}, opts]