1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/asn1/DerNumericString.cs b/crypto/src/asn1/DerNumericString.cs
index 6e2715a4d..a729f9e8e 100644
--- a/crypto/src/asn1/DerNumericString.cs
+++ b/crypto/src/asn1/DerNumericString.cs
@@ -26,7 +26,7 @@ namespace Org.BouncyCastle.Asn1
                 return (DerNumericString)obj;
             }
 
-            throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
+            throw new ArgumentException("illegal object in GetInstance: " + Platform.GetTypeName(obj));
         }
 
         /**