diff --git a/osm_lcm/ns.py b/osm_lcm/ns.py
index f868a6e..e530b8c 100644
--- a/osm_lcm/ns.py
+++ b/osm_lcm/ns.py
@@ -4860,6 +4860,13 @@
                 db_vnfr = self.db.get_one(
                     "vnfrs", {"member-vnf-index-ref": vnf_index, "nsr-id-ref": nsr_id}
                 )
+                if db_vnfr.get("kdur"):
+                    kdur_list = []
+                    for kdur in db_vnfr["kdur"]:
+                        if kdur.get("additionalParams"):
+                            kdur["additionalParams"] = json.loads(kdur["additionalParams"])
+                        kdur_list.append(kdur)
+                    db_vnfr["kdur"] = kdur_list
                 step = "Getting vnfd from database"
                 db_vnfd = self.db.get_one("vnfds", {"_id": db_vnfr["vnfd-id"]})