diff --git a/buffet/states/state_change_queue.cc b/buffet/states/state_change_queue.cc
index 74ac682..a6e1a72 100644
--- a/buffet/states/state_change_queue.cc
+++ b/buffet/states/state_change_queue.cc
@@ -42,6 +42,7 @@
                                element_old->second.end());
     state_changes_.erase(element_old);
   }
+  ++last_change_id_;
   return true;
 }