diff --git a/yuthon_property_approval/models/property_lease_contract.py b/yuthon_property_approval/models/property_lease_contract.py
index 644bdef67..0750c76a2 100644
--- a/yuthon_property_approval/models/property_lease_contract.py
+++ b/yuthon_property_approval/models/property_lease_contract.py
@@ -642,7 +642,7 @@ class PropertyLeaseContract(models.Model):
             now = date.today()
             if record.actual_end_time and record.term_start_time:
                 if record.actual_end_time > now:
-                    delta = now - record.actual_end_time
+                    delta = record.actual_end_time - now
                     if 60<= delta.days < 90:
                         record.end_comparison = 'blue'
                     elif 30<= delta.days< 60: