1 files changed, 1 insertions, 7 deletions
diff --git a/crypto/src/asn1/crmf/PopoSigningKey.cs b/crypto/src/asn1/crmf/PopoSigningKey.cs
index 1c24db8ee..11e735415 100644
--- a/crypto/src/asn1/crmf/PopoSigningKey.cs
+++ b/crypto/src/asn1/crmf/PopoSigningKey.cs
@@ -101,15 +101,9 @@ namespace Org.BouncyCastle.Asn1.Crmf
         public override Asn1Object ToAsn1Object()
         {
             Asn1EncodableVector v = new Asn1EncodableVector();
-
-            if (poposkInput != null)
-            {
-                v.Add(new DerTaggedObject(false, 0, poposkInput));
-            }
-
+            v.AddOptionalTagged(false, 0, poposkInput);
             v.Add(algorithmIdentifier);
             v.Add(signature);
-
             return new DerSequence(v);
         }
     }