diff --git a/APPL/API2/model_res_discipline.inc b/APPL/API2/model_res_discipline.inc
index b1e2f57cc0..0e571dfada 100644
--- a/APPL/API2/model_res_discipline.inc
+++ b/APPL/API2/model_res_discipline.inc
@@ -114,7 +114,7 @@ _model_res_discipline = // Internal only
     },
 
     includes : {
-        "disciplines": {
+        "activities": {
             "model": new model_res_activiteit_discipline(),
             "joinfield": "res_discipline_key",
             "enable_update": true