Portability fixes

2 files changed, 2 insertions, 2 deletions

diff --git a/crypto/src/cms/CMSSignedHelper.cs b/crypto/src/cms/CMSSignedHelper.cs

index 97ca54182..6d17200d0 100644
--- a/crypto/src/cms/CMSSignedHelper.cs
+++ b/crypto/src/cms/CMSSignedHelper.cs
@@ -440,7 +440,7 @@ namespace Org.BouncyCastle.Cms
 
 		public IX509Store GetCertificates(Asn1Set certificates)
 		{
-			ArrayList certList = new ArrayList();
+            IList certList = Platform.CreateArrayList();
 			if (certificates != null)
             {				
 				foreach (Asn1Encodable enc in certificates)
diff --git a/crypto/src/openpgp/PgpObjectFactory.cs b/crypto/src/openpgp/PgpObjectFactory.cs

index c31cd221c..3abb6c945 100644
--- a/crypto/src/openpgp/PgpObjectFactory.cs
+++ b/crypto/src/openpgp/PgpObjectFactory.cs
@@ -151,7 +151,7 @@ namespace Org.BouncyCastle.Bcpg.OpenPgp
             PgpObject pgpObject;
             while ((pgpObject = NextPgpObject()) != null)
             {
-                if (type.IsAssignableFrom(pgpObject.GetType()))
+                if (type.IsInstanceOfType(pgpObject.GetType()))
                 {
                     result.Add(pgpObject);
                 }