1 files changed, 2 insertions, 2 deletions
diff --git a/pubkey.h b/pubkey.h
index a5fb704..4899f53 100644
--- a/pubkey.h
+++ b/pubkey.h
@@ -474,7 +474,7 @@ class TF_EncryptorImpl : public TF_PublicObjectImpl<TF_EncryptorBase, SCHEME_OPT
 template <class SCHEME_OPTIONS>
 class TF_SignerImpl : public TF_PrivateObjectImpl<TF_SignerBase, SCHEME_OPTIONS>
 {
-	PK_MessageAccumulator * NewSignatureAccumulator(RandomNumberGenerator &rng = NullRNG()) const
+	PK_MessageAccumulator * NewSignatureAccumulator(RandomNumberGenerator &rng) const
 	{
 		return new PK_MessageAccumulatorImpl<CPP_TYPENAME SCHEME_OPTIONS::HashFunction>;
 	}
@@ -1366,7 +1366,7 @@ public:
 template <class SCHEME_OPTIONS>
 class DL_SignerImpl : public DL_PrivateObjectImpl<DL_SignerBase<typename SCHEME_OPTIONS::Element>, SCHEME_OPTIONS>
 {
-	PK_MessageAccumulator * NewSignatureAccumulator(RandomNumberGenerator &rng = NullRNG()) const
+	PK_MessageAccumulator * NewSignatureAccumulator(RandomNumberGenerator &rng) const
 	{
 		std::auto_ptr<PK_MessageAccumulatorBase> p(new PK_MessageAccumulatorImpl<CPP_TYPENAME SCHEME_OPTIONS::HashFunction>);
 		RestartMessageAccumulator(rng, *p);