diff --git a/lib/ansible/module_utils/redhat.py b/lib/ansible/module_utils/redhat.py
index cc79f0f858..1eb6938514 100644
--- a/lib/ansible/module_utils/redhat.py
+++ b/lib/ansible/module_utils/redhat.py
@@ -66,7 +66,7 @@ class RegistrationBase(object):
                 cfg.set('main', 'enabled', 1)
             else:
                 cfg.set('main', 'enabled', 0)
-            fd = open(plugin_conf, 'rwa+')
+            fd = open(plugin_conf, 'w+')
             cfg.write(fd)
             fd.close()