diff --git a/buildout/instance-profiles/zope-2.12.cfg b/buildout/instance-profiles/zope-2.12.cfg
index 6c9f7fefb5986ccb29fe47289971fe5f870f368a..0379ba91d81e63952e6c909deed7bebe23196cd8 100644
--- a/buildout/instance-profiles/zope-2.12.cfg
+++ b/buildout/instance-profiles/zope-2.12.cfg
@@ -51,7 +51,7 @@ trusted-proxy =
 publisher-profile-file =
 security-policy-implementation = C
 skip-authentication-checking = off
-skip-ownership-checking = off
+skip-ownership-checking = on
 verbose-security = off
 maximum-number-of-session-objects = 1000
 session-add-notify-script-path =
diff --git a/buildout/instance-profiles/zope.cfg b/buildout/instance-profiles/zope.cfg
index 24dfa88d86d1b6d296c3b6e55c8477e76e4c0dfb..7e757d84814d0bbe1cd36bdb205a5499a43d97ee 100644
--- a/buildout/instance-profiles/zope.cfg
+++ b/buildout/instance-profiles/zope.cfg
@@ -51,7 +51,7 @@ trusted-proxy =
 publisher-profile-file =
 security-policy-implementation = C
 skip-authentication-checking = off
-skip-ownership-checking = off
+skip-ownership-checking = on
 verbose-security = off
 maximum-number-of-session-objects = 1000
 session-add-notify-script-path =