diff --git a/test/simulation/109-makestep b/test/simulation/109-makestep
index 421c6af..781e20b 100755
--- a/test/simulation/109-makestep
+++ b/test/simulation/109-makestep
@@ -3,6 +3,15 @@
 . test.common
 test_start "makestep directive"
 
+client_conf="makestep 0 -1
+corrtimeratio 1e10"
+
+run_test || test_fail
+check_chronyd_exit || test_fail
+check_source_selection || test_fail
+check_packet_interval || test_fail
+check_sync || test_fail
+
 limit=200
 jitter=1e-5
 client_conf="makestep 2 1"