diff --git a/apps/product/services/quota_stat_service.py b/apps/product/services/quota_stat_service.py
index 63b7f5d..4b332da 100644
--- a/apps/product/services/quota_stat_service.py
+++ b/apps/product/services/quota_stat_service.py
@@ -59,11 +59,14 @@ class QuotaStatsService:
         assigner_stat, created = OrganizationQuotaStats.objects.get_or_create(
             organization=assigner,
             quota=quota,
-            stat_type='distribution'
         )
-        assigner_stat.remaining_amount -= distribution.weight
-        assigner_stat.total_distributed += distribution.weight
-        assigner_stat.save()
+        if created:
+            assigner_stat.stat_type = 'distribution'
+            assigner_stat.save()
+        if assigner_stat.stat_type == 'distribution':
+            assigner_stat.remaining_amount -= distribution.weight
+            assigner_stat.total_distributed += distribution.weight
+            assigner_stat.save()
 
         # ============== destination ================
         assigned_stat, _ = OrganizationQuotaStats.objects.get_or_create(