diff --git a/ipaserver/install/dogtaginstance.py b/ipaserver/install/dogtaginstance.py
index 29c74b6cb..1fdc3e50a 100644
--- a/ipaserver/install/dogtaginstance.py
+++ b/ipaserver/install/dogtaginstance.py
@@ -319,7 +319,7 @@ class DogtagInstance(service.Service):
         services.knownservices.messagebus.start()
         cmonger.start()
 
-        nicknames = self.tracking_reqs
+        nicknames = list(self.tracking_reqs)
         if self.server_cert_name is not None:
             nicknames.append(self.server_cert_name)