--- a/gcomm/test/check_evs2.cpp
+++ b/gcomm/test/check_evs2.cpp
@@ -2583,6 +2583,7 @@
     gu::datetime::SimClock::inc_time(300 * gu::datetime::MSec);
     evs_from_dummy(dn[1])->handle_timers();
     evs_from_dummy(dn[2])->handle_timers();
+    prop.propagate_until_empty();
     ck_assert(evs_from_dummy(dn[1])->state() == gcomm::evs::Proto::S_GATHER);
     ck_assert(evs_from_dummy(dn[2])->state() == gcomm::evs::Proto::S_GATHER);