1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/src/asn1/nist/KMACwithSHAKE128_params.cs b/crypto/src/asn1/nist/KMACwithSHAKE128_params.cs

index a1fd8f403..df2bf0173 100644
--- a/crypto/src/asn1/nist/KMACwithSHAKE128_params.cs
+++ b/crypto/src/asn1/nist/KMACwithSHAKE128_params.cs
@@ -86,7 +86,7 @@ public class KMacWithShake128Params : Asn1Encodable
 
     public override Asn1Object ToAsn1Object()
     {
-        Asn1EncodableVector v = new Asn1EncodableVector();
+        Asn1EncodableVector v = new Asn1EncodableVector(2);
         if (outputLength != DEF_LENGTH)
         {
             v.Add(new DerInteger(outputLength));