diff --git a/shop/admin.py b/shop/admin.py
index 75beb05c..f9f20fef 100644
--- a/shop/admin.py
+++ b/shop/admin.py
@@ -80,6 +80,6 @@ class OrderAdmin(admin.ModelAdmin):
 
     def mark_order_as_refunded(self, request, queryset):
         for order in queryset.filter(refunded=False):
-            order.mark_as_refunded()
+            order.mark_as_refunded(request)
     mark_order_as_refunded.description = 'Mark order(s) as refunded'
 
diff --git a/shop/models.py b/shop/models.py
index 4be40a2a..b11f0e26 100644
--- a/shop/models.py
+++ b/shop/models.py
@@ -144,9 +144,9 @@ class Order(CreatedUpdatedModel):
                     ticket.save()
         self.save()
 
-    def mark_as_refunded(self):
+    def mark_as_refunded(self, request):
         if not self.paid:
-            messages.error(self.request, "Order %s is not paid so cannot mark as refunded!" % self.pk)
+            messages.error(request, "Order %s is not paid, so cannot mark it as refunded!" % self.pk)
         else:
             self.refunded=True
             ### delete any tickets related to this order