diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/RT.ENB_IS_CALISSON.MME_IS_YANG/epc.yang.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/RT.ENB_IS_CALISSON.MME_IS_YANG/epc.yang.conf
index 7b23e26a55..c9232a35ae 100755
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/RT.ENB_IS_CALISSON.MME_IS_YANG/epc.yang.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/RT.ENB_IS_CALISSON.MME_IS_YANG/epc.yang.conf
@@ -127,4 +127,12 @@ P-GW =
     };
 };
 
+HSS = 
+{
+    NETWORK_INTERFACES : 
+    {
+        HSS_INTERFACE_NAME_FOR_S6A          = "none";
+        HSS_IPV4_ADDRESS_FOR_S6A            = "192.168.13.177/24";
+    };
+};