diff --git a/models/scop_cotisation_idf.py b/models/scop_cotisation_idf.py
index 2604d4c6b763866229149d0af96f5305a0790589..8cbc3418346501c45a4e8553133838cc7c4f391c 100644
--- a/models/scop_cotisation_idf.py
+++ b/models/scop_cotisation_idf.py
@@ -24,7 +24,7 @@ class ScopCotisationsIDF(models.Model):
     )
     journal = fields.Char("Journal")
     writing_date = fields.Date("Date écriture")
-    piece = fields.Integer("Numéro de pièce comptable")
+    acc_doc = fields.Char("Numéro de pièce comptable")
     year = fields.Char("Année")
     type = fields.Selection(
         [
diff --git a/report/scop_contribution_report.py b/report/scop_contribution_report.py
index f88249eea48c996ba2a84cc64f268f774d2758a4..1aabfde9e3b46d7c1316deb3705779a8ac34853c 100644
--- a/report/scop_contribution_report.py
+++ b/report/scop_contribution_report.py
@@ -60,7 +60,7 @@ class ScopContributionReport(models.Model):
                     lambda p: {
                         "date": p.writing_date,
                         "name": p.name,
-                        "ref": p.piece,
+                        "ref": p.acc_doc,
                         "credit": p.credit,
                     }
                 )