diff --git a/system-test/mdbci/set_run_test_variables.sh b/system-test/mdbci/set_run_test_variables.sh
index 550cfcb6e..d4435c400 100644
--- a/system-test/mdbci/set_run_test_variables.sh
+++ b/system-test/mdbci/set_run_test_variables.sh
@@ -13,5 +13,5 @@ export team_keys=${team_keys:-${HOME}/team_keys}
 export do_not_destroy_vm=${do_not_destroy_vm:-"yes"}
 #export test_set=${test_set:-"-LE UNSTABLE"}
 export test_set=${test_set:-"-I 1,5"}
-export force_maxscale_version=${test_set:-"true"}
-export force_backend_version=${test_set:-"false"}
+export force_maxscale_version=${force_maxscale_version:-"true"}
+export force_backend_version=${force_backend_version:-"false"}