diff --git a/base.cfg b/base.cfg
index c516bfef48..846b059b83 100644
--- a/base.cfg
+++ b/base.cfg
@@ -74,7 +74,6 @@ initialization =
     # necessary to explicitly call time.tzset().
     import time
     time.tzset()
-    os.environ['ZSERVER_PORT'] = '55001'
 defaults = ['-s', 'plone.restapi', '--auto-color', '--auto-progress']
 
 [coverage]