1 files changed, 2 insertions, 5 deletions
diff --git a/crypto/src/asn1/pkcs/ContentInfo.cs b/crypto/src/asn1/pkcs/ContentInfo.cs
index d19b4659c..05d9a2033 100644
--- a/crypto/src/asn1/pkcs/ContentInfo.cs
+++ b/crypto/src/asn1/pkcs/ContentInfo.cs
@@ -1,5 +1,3 @@
-using System;
-
 namespace Org.BouncyCastle.Asn1.Pkcs
 {
     public class ContentInfo
@@ -12,9 +10,8 @@ namespace Org.BouncyCastle.Asn1.Pkcs
         {
             if (obj == null)
                 return null;
-            ContentInfo existing = obj as ContentInfo;
-            if (existing != null)
-                return existing;
+            if (obj is ContentInfo contentInfo)
+                return contentInfo;
             return new ContentInfo(Asn1Sequence.GetInstance(obj));
         }