diff --git a/plum/service_collection.py b/plum/service_collection.py
index 82ea78ffa..3c59c6ed5 100644
--- a/plum/service_collection.py
+++ b/plum/service_collection.py
@@ -43,12 +43,12 @@ class ServiceCollection(list):
                 return service
 
     def start(self):
-        for container in self:
-            container.start()
+        for service in self:
+            service.start()
 
     def stop(self):
-        for container in self:
-            container.stop()
+        for service in self:
+            service.stop()