1 files changed, 4 insertions, 10 deletions
diff --git a/crypto/src/asn1/x509/qualified/BiometricData.cs b/crypto/src/asn1/x509/qualified/BiometricData.cs
index bb70c342c..816ffd26d 100644
--- a/crypto/src/asn1/x509/qualified/BiometricData.cs
+++ b/crypto/src/asn1/x509/qualified/BiometricData.cs
@@ -94,17 +94,11 @@ namespace Org.BouncyCastle.Asn1.X509.Qualified
 			get { return sourceDataUri; }
 		}
 
-		public override Asn1Object ToAsn1Object()
+        public override Asn1Object ToAsn1Object()
         {
-            Asn1EncodableVector seq = new Asn1EncodableVector(
-				typeOfBiometricData, hashAlgorithm, biometricDataHash);
-
-			if (sourceDataUri != null)
-            {
-                seq.Add(sourceDataUri);
-            }
-
-			return new DerSequence(seq);
+            Asn1EncodableVector v = new Asn1EncodableVector(typeOfBiometricData, hashAlgorithm, biometricDataHash);
+            v.AddOptional(sourceDataUri);
+            return new DerSequence(v);
         }
     }
 }