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path: root/crypto/src/asn1/ess/ESSCertID.cs
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Diffstat (limited to 'crypto/src/asn1/ess/ESSCertID.cs')
-rw-r--r--crypto/src/asn1/ess/ESSCertID.cs7
1 files changed, 1 insertions, 6 deletions
diff --git a/crypto/src/asn1/ess/ESSCertID.cs b/crypto/src/asn1/ess/ESSCertID.cs
index b4465ea4f..7e5fe4c1e 100644
--- a/crypto/src/asn1/ess/ESSCertID.cs
+++ b/crypto/src/asn1/ess/ESSCertID.cs
@@ -82,12 +82,7 @@ namespace Org.BouncyCastle.Asn1.Ess
 		public override Asn1Object ToAsn1Object()
 		{
 			Asn1EncodableVector v = new Asn1EncodableVector(certHash);
-
-			if (issuerSerial != null)
-			{
-				v.Add(issuerSerial);
-			}
-
+            v.AddOptional(issuerSerial);
 			return new DerSequence(v);
 		}
 	}