diff --git a/src/Nethermind/Nethermind.Evm/Instructions/EvmInstructions.Math1Param.cs b/src/Nethermind/Nethermind.Evm/Instructions/EvmInstructions.Math1Param.cs
index 10adbed20ab..5c88c0ed604 100644
--- a/src/Nethermind/Nethermind.Evm/Instructions/EvmInstructions.Math1Param.cs
+++ b/src/Nethermind/Nethermind.Evm/Instructions/EvmInstructions.Math1Param.cs
@@ -98,6 +98,8 @@ public struct OpIsZero : IOpMath1Param
     /// </summary>
     public struct OpCLZ : IOpMath1Param
     {
+        static long GasCost => GasCostOf.Low;
+
         public static Word Operation(Word value) => value == default
             ? Vector256.Create((byte)0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0)
             : Vector256.Create(0UL, 0UL, 0UL, (ulong)value.CountLeadingZeroBits() << 56).AsByte();