diff --git a/src/common/tools/descriptor/Tools.py b/src/common/tools/descriptor/Tools.py
index 909cec9d97b5baa2f7b0198091c3921a71c9b1f7..cc7fa37577ec7b490756078a90aff959658274b4 100644
--- a/src/common/tools/descriptor/Tools.py
+++ b/src/common/tools/descriptor/Tools.py
@@ -74,7 +74,7 @@ def format_service_custom_config_rules(service : Dict) -> Dict:
 def format_slice_custom_config_rules(slice_ : Dict) -> Dict:
     config_rules = slice_.get('service_config', {}).get('config_rules', [])
     config_rules = format_custom_config_rules(config_rules)
-    slice_['service_config']['config_rules'] = config_rules
+    slice_['slice_config']['config_rules'] = config_rules
     return slice_
 
 def split_devices_by_rules(devices : List[Dict]) -> Tuple[List[Dict], List[Dict]]: