1 files changed, 4 insertions, 5 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/asn1/x9/DHValidationParms.java b/bcprov/src/main/java/org/bouncycastle/asn1/x9/DHValidationParms.java
index 78b0979..b3020e0 100644
--- a/bcprov/src/main/java/org/bouncycastle/asn1/x9/DHValidationParms.java
+++ b/bcprov/src/main/java/org/bouncycastle/asn1/x9/DHValidationParms.java
@@ -21,17 +21,16 @@ public class DHValidationParms extends ASN1Object
 
     public static DHValidationParms getInstance(Object obj)
     {
-        if (obj == null || obj instanceof DHDomainParameters)
+        if (obj instanceof DHValidationParms)
         {
             return (DHValidationParms)obj;
         }
-
-        if (obj instanceof ASN1Sequence)
+        else if (obj != null)
         {
-            return new DHValidationParms((ASN1Sequence)obj);
+            return new DHValidationParms(ASN1Sequence.getInstance(obj));
         }
 
-        throw new IllegalArgumentException("Invalid DHValidationParms: " + obj.getClass().getName());
+        return null;
     }
 
     public DHValidationParms(DERBitString seed, ASN1Integer pgenCounter)