diff --git a/pysollib/kpat_load_save.py b/pysollib/kpat_load_save.py
index 96c70944..556c2c20 100644
--- a/pysollib/kpat_load_save.py
+++ b/pysollib/kpat_load_save.py
@@ -63,3 +63,6 @@ class KpatXmlEmitter:
              ("suit", self._calcSuit(card.suit)),
              ("rank", self._calcRank(card.rank))] +
             ([("turn", turn)] if turn else []))
+
+    def writeInitialLayout(self, state, turn_cb):
+        assert False  # unimpl