diff --git a/core/srp.js b/core/srp.js
index 417cd5ed..814f3245 100644
--- a/core/srp.js
+++ b/core/srp.js
@@ -8,13 +8,13 @@
  * @class SRP
  */
 sjcl.keyexchange.srp = {
-  makeVerifier: function(I, P, s, N, g) {
+  makeVerifier: function(I, P, s, group) {
     var x;
     // From RFC 5054:
     // v = g^x mod N
     x = this.makeX(I, P, s);
     x = sjcl.bn.fromBits(x);
-    return g.powermod(x, N);
+    return group.g.powermod(x, group.N);
   },
 
   makeX: function(I, P, s) {
diff --git a/test/srp_test.js b/test/srp_test.js
index d5219e72..8a40b871 100644
--- a/test/srp_test.js
+++ b/test/srp_test.js
@@ -5,17 +5,16 @@ new sjcl.test.TestCase("SRP known-answer (RFC 5054) tests", function (cb) {
     return;
   }
 
-  var i, kat = sjcl.test.vector.srp, tv, N, g, v, x;
+  var i, kat = sjcl.test.vector.srp, tv, group, v, x;
 
   for (i=0; i<kat.length; i++) {
     tv = kat[i];
-    N = sjcl.keyexchange.srp.knownGroup(tv.known_group_size).N;
-    g = sjcl.keyexchange.srp.knownGroup(tv.known_group_size).g;
+    group = sjcl.keyexchange.srp.knownGroup(tv.known_group_size);
     tv.s = sjcl.codec.hex.toBits(tv.s);
     x = sjcl.keyexchange.srp.makeX(tv.I, tv.P, tv.s);
     this.require(sjcl.codec.hex.fromBits(x).toUpperCase() === tv.x, "srpx #"+i);
 
-    v = sjcl.keyexchange.srp.makeVerifier(tv.I, tv.P, tv.s, N, g);
+    v = sjcl.keyexchange.srp.makeVerifier(tv.I, tv.P, tv.s, group);
     this.require(v.equals(new sjcl.bn(tv.v)), "srpv #"+i);
   }
   cb && cb();