diff --git a/tests/unit/test_helper.bash b/tests/unit/test_helper.bash
index cac706f9c..5ca474caa 100644
--- a/tests/unit/test_helper.bash
+++ b/tests/unit/test_helper.bash
@@ -23,7 +23,7 @@ global_setup() {
   dokku apps:list
   docker container ls
   free -m
-  docker container ls | xargs -n1 docker container rm || true
+  docker container ls --quiet | xargs -n1 docker container rm -f || true
 }
 
 global_teardown() {