diff --git a/ZAbsences.py b/ZAbsences.py
index 035aea9c3b..a82208d6fa 100644
--- a/ZAbsences.py
+++ b/ZAbsences.py
@@ -1435,7 +1435,7 @@ class ZAbsences(
             gr_tit = p + h
 
         title = "Etat des absences %s" % gr_tit
-        if format == "xls" or format == "xml":
+        if format == "xls" or format == "xml" or format == "json":
             columns_ids = ["etudid"] + columns_ids
         tab = GenTable(
             columns_ids=columns_ids,