diff --git a/models/yang/vnfd-base.yang b/models/yang/vnfd-base.yang
index 75dcadc..acb5b28 100644
--- a/models/yang/vnfd-base.yang
+++ b/models/yang/vnfd-base.yang
@@ -64,6 +64,7 @@
     leaf port-security-enabled {
       description "Enables the port security for the port";
       type boolean;
+      default true;
     }
   }