diff --git a/security/dummy.c b/security/dummy.c
index 853ec22..64b647a 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -463,6 +463,11 @@
 	return 0;
 }
 
+static int dummy_dentry_open (struct file *file)
+{
+	return 0;
+}
+
 static int dummy_task_create (unsigned long clone_flags)
 {
 	return 0;
@@ -1033,6 +1038,7 @@
 	set_to_dummy_if_null(ops, file_set_fowner);
 	set_to_dummy_if_null(ops, file_send_sigiotask);
 	set_to_dummy_if_null(ops, file_receive);
+	set_to_dummy_if_null(ops, dentry_open);
 	set_to_dummy_if_null(ops, task_create);
 	set_to_dummy_if_null(ops, task_alloc_security);
 	set_to_dummy_if_null(ops, task_free_security);