diff --git a/src/common/tools/object_factory/Constraint.py b/src/common/tools/object_factory/Constraint.py
index 0df049ab7412b8019fe5eff97858f527cea24042..ef00e3872343196f0a9f8de97d3b1ab6fc12d847 100644
--- a/src/common/tools/object_factory/Constraint.py
+++ b/src/common/tools/object_factory/Constraint.py
@@ -29,9 +29,9 @@ def json_constraint_endpoint_location_gps(endpoint_id : Dict, latitude : float,
 def json_constraint_endpoint_priority(endpoint_id : Dict, priority : int) -> Dict:
     return {'endpoint_priority': {'endpoint_id': endpoint_id, 'priority': priority}}
 
-def json_constraint_sla_availability(num_disjoint_paths : int, all_active : bool) -> Dict:
+def json_constraint_sla_availability(num_disjoint_paths : int, all_active : bool, availability : float) -> Dict:
     return {'sla_availability': {
-        'num_disjoint_paths': num_disjoint_paths, 'all_active': all_active
+        'num_disjoint_paths': num_disjoint_paths, 'all_active': all_active, 'availability': availability
     }}
 
 def json_constraint_sla_capacity(capacity_gbps : float) -> Dict: