diff --git a/authentic/liberty/root.ptl b/authentic/liberty/root.ptl
index 5c8304d..8c4ce9d 100644
--- a/authentic/liberty/root.ptl
+++ b/authentic/liberty/root.ptl
@@ -1383,10 +1383,12 @@ class SpUI(AccessControlled, Directory):
                 authentic.misc.get_abs_path(lp['metadata']),
                 authentic.misc.get_abs_path(lp.get('publickey')), None)
 
-    def login(self):
+    def login(self, relay_state=None):
         self.init_provider()
         login = lasso.Login(get_lasso_server())
         login.initIdpInitiatedAuthnRequest(self.p.providerId)
+        if relay_state:
+            login.msgRelayState = relay_state
         get_logger().info('SSO to %s' % self.p.providerId)
         login.request.protocolProfile = lasso.LIB_PROTOCOL_PROFILE_BRWS_ART
         login.processAuthnRequestMsg(None)