diff --git a/models/acc_operation.py b/models/acc_operation.py
index dd248477046f2399a0c0e64fc914b6296a2fba93..d09f567658c0f69ea9cf7bfd1e2ecca0bc0ea4ba 100644
--- a/models/acc_operation.py
+++ b/models/acc_operation.py
@@ -1311,8 +1311,10 @@ class AccOperation(models.Model):
         scale_init = scale
         if not date_start and not date_end:
             date_start, date_end = self.get_last_day(scale)
+            is_scale = True
         else:
             date_end = date_utils.end_of(date_end, "day")
+            is_scale = False
 
         scale, step_courbe, step_display_courbe = self.get_step_from_date(
             date_start=date_start, date_end=date_end, scale=scale
@@ -1345,6 +1347,9 @@ class AccOperation(models.Model):
         date_min = self.get_first_day()
         date_min = date_min.strftime("%d/%m/%Y")
 
+        if not is_scale:
+            scale_init = False
+
         result_graph.update(
             {
                 "date_start": date_start,