diff --git a/eccrypto.h b/eccrypto.h
index 8d95780c..b359e033 100644
--- a/eccrypto.h
+++ b/eccrypto.h
@@ -197,7 +197,7 @@ struct DL_Keys_EC
 	typedef DL_PrivateKey_EC<EC> PrivateKey;
 };
 
-template <class EC, class H = SHA>
+template <class EC, class H>
 struct ECDSA;
 
 //! ECDSA keys
@@ -205,7 +205,7 @@ template <class EC>
 struct DL_Keys_ECDSA
 {
 	typedef DL_PublicKey_EC<EC> PublicKey;
-	typedef DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<EC>, ECDSA<EC> > PrivateKey;
+	typedef DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<EC>, ECDSA<EC, SHA256> > PrivateKey;
 };
 
 //! ECDSA algorithm
@@ -272,8 +272,8 @@ CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_EC<ECP>;
 CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_EC<EC2N>;
 CRYPTOPP_DLL_TEMPLATE_CLASS DL_Algorithm_GDSA<ECP::Point>;
 CRYPTOPP_DLL_TEMPLATE_CLASS DL_Algorithm_GDSA<EC2N::Point>;
-CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<ECP>, ECDSA<ECP> >;
-CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<EC2N>, ECDSA<EC2N> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<ECP>, ECDSA<ECP, SHA256> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<EC2N>, ECDSA<EC2N, SHA256> >;
 
 NAMESPACE_END