diff --git a/models/scop_cotisation.py b/models/scop_cotisation.py
index bb50c158cb282f5cf7e85816f4ebd6090772b9b9..f52a3f98d76ac52ef43bcb9ab4d98207297f8708 100644
--- a/models/scop_cotisation.py
+++ b/models/scop_cotisation.py
@@ -51,6 +51,9 @@ class ScopCotisation(models.AbstractModel):
     new_member_count = fields.Integer(
         "Nouveaux adhérents",
         compute='_compute_new_member_count')
+    invoiced_member_count = fields.Integer(
+        "Cotisations créées",
+        compute='_compute_invoiced_member_count')
     trimester_1 = fields.Date('1er Trimestre')
     trimester_2 = fields.Date('2ème Trimestre')
     trimester_3 = fields.Date('3ème Trimestre')
@@ -69,6 +72,12 @@ class ScopCotisation(models.AbstractModel):
         for cotiz in self:
             cotiz.new_member_count = len(cotiz.get_new_members())
 
+    @api.multi
+    def _compute_invoiced_member_count(self):
+        for cotiz in self:
+            cotiz.invoiced_member_count = len(
+                cotiz.invoice_ids.mapped('partner_id'))
+
     # ------------------------------------------------------
     # Global functions
     # ------------------------------------------------------