diff --git a/apps/establishment/models.py b/apps/establishment/models.py
index fb56b8b2..5f575c78 100644
--- a/apps/establishment/models.py
+++ b/apps/establishment/models.py
@@ -690,8 +690,8 @@ class Establishment(GalleryMixin, ProjectBaseMixin, URLImageMixin,
         plates = self.menu_set.filter(
             models.Q(category={'en-GB': 'formulas'})
         ).aggregate(
-            max=models.Max('plate__price', output_field=models.FloatField()),
-            min=models.Min('plate__price', output_field=models.FloatField()))
+            max=models.Max('plates__price', output_field=models.FloatField()),
+            min=models.Min('plates__price', output_field=models.FloatField()))
         return plates
 
     @property
@@ -701,8 +701,8 @@ class Establishment(GalleryMixin, ProjectBaseMixin, URLImageMixin,
             models.Q(category={'en-GB': 'main_course'}) |
             models.Q(category={'en-GB': 'dessert'})
         ).aggregate(
-            max=models.Max('plate__price', output_field=models.FloatField()),
-            min=models.Min('plate__price', output_field=models.FloatField()),
+            max=models.Max('plates__price', output_field=models.FloatField()),
+            min=models.Min('plates__price', output_field=models.FloatField()),
         )
         return plates